{"id":341271,"date":"2021-02-17T12:33:07","date_gmt":"2021-02-17T04:33:07","guid":{"rendered":"http:\/\/4563.org\/?p=341271"},"modified":"2021-02-17T12:33:07","modified_gmt":"2021-02-17T04:33:07","slug":"%e7%bf%bb%e8%af%91%ef%bc%9a%e3%80%8a%e5%ae%9e%e7%94%a8%e7%9a%84-python-%e7%bc%96%e7%a8%8b%e3%80%8b01_02_hello_world","status":"publish","type":"post","link":"http:\/\/4563.org\/?p=341271","title":{"rendered":"\u7ffb\u8bd1\uff1a\u300a\u5b9e\u7528\u7684 Python \u7f16\u7a0b\u300b01_02_Hello_world"},"content":{"rendered":"
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\u7ffb\u8bd1\uff1a\u300a\u5b9e\u7528\u7684 Python \u7f16\u7a0b\u300b01_02_Hello_world <\/h1>\n

<\/p>\n

\n
\u8cc7\u6df1\u5927\u4f6c : codists <\/span> <\/i> 2<\/span> <\/div>\n
<\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n
<\/p>\n

1.2 \u7b2c\u4e00\u4e2a\u7a0b\u5e8f<\/h1>\n

<\/p>\n

\u672c\u8282\u8ba8\u8bba\u6709\u5173\u5982\u4f55\u521b\u5efa\u4e00\u4e2a\u7a0b\u5e8f\u3001\u8fd0\u884c\u89e3\u91ca\u5668\u548c\u8c03\u8bd5\u7684\u57fa\u7840\u77e5\u8bc6\u3002<\/p>\n

\u8fd0\u884c Python<\/h3>\n

Python \u7a0b\u5e8f\u59cb\u7ec8\u5728\u89e3\u91ca\u5668\u4e2d\u8fd0\u884c\u3002<\/p>\n

\u89e3\u91ca\u5668\u662f\u4e00\u4e2a\u201c\u57fa\u4e8e\u63a7\u5236\u53f0\u201d\u7684\u5e94\u7528\u7a0b\u5e8f\uff0c\u901a\u5e38\u4ece\u547d\u4ee4\u884c shell \u542f\u52a8\u3002<\/p>\n

python3 Python 3.6.1 (v3.6.1:69c0db5050, Mar 21 2017, 01:21:04) [GCC 4.2.1 (Apple Inc. build 5666) (dot 3)] on darwin Type \"help\", \"copyright\", \"credits\" or \"license\" for more information. >>> <\/code><\/pre>\n
\u8001\u7ec3\u7684\u7a0b\u5e8f\u5458\u4ee5\u8fd9\u79cd\u65b9\u5f0f\u4f7f\u7528\u89e3\u91ca\u5668\u65f6\u901a\u5e38\u90fd\u6ca1\u6709\u95ee\u9898\uff0c\u4f46\u5bf9\u4e8e\u521d\u5b66\u8005\u6765\u8bf4\uff0c\u8fd9\u79cd\u65b9\u5f0f\u5e76\u4e0d\u662f\u90a3\u4e48\u53cb\u597d\u3002\u60a8\u53ef\u80fd\u4f1a\u4f7f\u7528\u4e00\u4e2a\u4e3a Python \u63d0\u4f9b\u4e0d\u540c\u63a5\u53e3\u7684\u73af\u5883\uff0c\u4f46\u662f\u5b66\u4f1a\u5982\u4f55\u8fd0\u884c Python \u7ec8\u7aef\u4ecd\u7136\u662f\u4e00\u9879\u6709\u5fc5\u8981\u4e86\u89e3\u7684\u6280\u80fd\u3002<\/p>\n
\u4ea4\u4e92\u6a21\u5f0f<\/h3>\n
\u5f53\u542f\u52a8 Python \u65f6\uff0c\u53ef\u4ee5\u8fdb\u5165\u4e00\u79cd\u4ea4\u4e92\u7684\u6a21\u5f0f\uff0c\u5728\u8fd9\u79cd\u6a21\u5f0f\u4e0b\uff0c\u53ef\u4ee5\u8fdb\u884c\u7f16\u7a0b\u5b9e\u9a8c\u3002<\/p>\n
\u5982\u679c\u8f93\u5165\u4ee3\u7801\u5b8c\u6bd5\uff0c\u8fd9\u4e9b\u4ee3\u7801\u5c06\u4f1a\u9a6c\u4e0a\u8fd0\u884c\u3002\u6ca1\u6709 edit\/compile\/run\/debug \u7b49\u6d41\u7a0b\u3002<\/p>\n
>>> print('hello world') hello world >>> 37*42 1554 >>> for i in range(5): ...     print(i) ... 0 1 2 3 4 >>> <\/code><\/pre>\n
\u8fd9\u5c31\u662f\u6240\u8c13\u7684\u201c\u8bfb\u53d6-\u6c42\u503c-\u8f93\u51fa-\u5faa\u73af\u201d\uff08\u8bd1\u8005\u6ce8\uff1a\u7b80\u5199\u4e3a REPL\uff0c\u4e5f\u6709\u4eba\u8bd1\u4e3a \u201c\u4ea4\u4e92\u5f0f\u89e3\u91ca\u5668\u201d\uff0c\u6b63\u50cf Python \u8fd9\u4e2a\u8bcd\u4e00\u6837\uff0c\u4e3a\u4e86\u66f4\u597d\u5730\u7406\u89e3\uff0c\u8fd9\u91cc\u4e0d\u7ffb\u8bd1\u3002\uff09\uff0c\u5bf9\u4e8e\u4ee3\u7801\u8c03\u8bd5\u548c\u63a2\u7d22\u975e\u5e38\u6709\u7528\u3002<\/p>\n
\u6682\u505c<\/strong>\uff1a\u5982\u679c\u60a8\u4e0d\u77e5\u9053\u5982\u4f55\u4e0e Python \u8fdb\u884c\u4ea4\u4e92\uff0c\u5148\u505c\u6b62\u60a8\u6b63\u5728\u505a\u7684\u4e8b\u60c5\uff0c\u7136\u540e\u5f04\u6e05\u695a\u5982\u4f55\u4e0e Python \u8fdb\u884c\u4ea4\u4e92\u3002\u5982\u679c\u60a8\u6b63\u5728\u4f7f\u7528\u7684\u662f\u96c6\u6210\u5f00\u53d1\u73af\u5883\uff08 IDE \uff09,\u5b83\u53ef\u80fd\u9690\u85cf\u5728\u4e00\u4e2a\u83dc\u5355\u9009\u9879\u6216\u8005\u5176\u5b83\u7a97\u53e3\u540e\u9762\u3002\u672c\u8bfe\u7a0b\u7684\u8bb8\u591a\u90e8\u5206\u90fd\u5047\u5b9a\u60a8\u80fd\u4e0e\u89e3\u91ca\u5668\u8fdb\u884c\u4ea4\u4e92\u3002<\/p>\n
\u8ba9\u6211\u4eec\u4ed4\u7ec6\u770b\u770b REPL \u7684\u5143\u7d20\uff1a<\/p>\n
    \n
  • >>><\/code> \u63d0\u793a\u7b26\u7528\u4e8e\u5f00\u59cb\u4e00\u4e2a\u65b0\u7684\u8bed\u53e5\u3002<\/li>\n
  • ...<\/code> \u63d0\u793a\u7b26\u7528\u4e8e\u7ee7\u7eed\u4e00\u4e2a\u8bed\u53e5\uff0c\u8f93\u5165\u4e00\u4e2a\u7a7a\u884c\u8868\u793a\u5168\u90e8\u8f93\u5165\u7ed3\u675f\uff0c\u5e76\u8fd0\u884c\u6240\u8f93\u5165\u7684\u4ee3\u7801\u3002<\/li>\n<\/ul>\n
    ...<\/code> \u63d0\u793a\u7b26\u53ef\u80fd\u4f1a\u663e\u793a\uff0c\u4e5f\u53ef\u80fd\u4e0d\u4f1a\u663e\u793a\uff0c\u8fd9\u53d6\u51b3\u4e8e\u4f7f\u7528\u7684\u73af\u5883\u3002\u5bf9\u4e8e\u672c\u8bfe\u7a0b\uff0c\u5c06 ...<\/code> \u63d0\u793a\u7b26\u663e\u793a\u4e3a\u7a7a\u767d\uff0c\u4ee5\u4fbf\u4e8e\u526a\u5207\u3001\u7c98\u8d34\u793a\u4f8b\u4ee3\u7801\u3002<\/p>\n
    \u4e0b\u5212\u7ebf _<\/code> \u4fdd\u5b58\u6700\u540e\u7684\u7ed3\u679c\u3002<\/p>\n
    >>> 37 * 42 1554 >>> _ * 2 3108 >>> _ + 50 3158 >>> <\/code><\/pre>\n
    \u4ec5\u5728\u4ea4\u4e92\u6a21\u5f0f\u4e0b\u5982\u6b64\uff08\u6307\u4e0b\u5212\u7ebf _<\/code> \u4fdd\u5b58\u6700\u540e\u7684\u7ed3\u679c)\uff0c\u6c38\u8fdc\u4e0d\u8981\u5728\u7a0b\u5e8f\u4e2d\u4f7f\u7528\u8fd9\u79cd\u65b9\u5f0f\u3002<\/p>\n
    \u521b\u5efa\u7a0b\u5e8f<\/h3>\n
    \u7a0b\u5e8f\u5199\u5728 .py<\/code> \u6587\u4ef6\u4e2d\u3002<\/p>\n
    # hello.py print('hello world') <\/code><\/pre>\n
    \u4f60\u53ef\u4ee5\u4f7f\u7528\u4f60\u6700\u559c\u6b22\u7684\u6587\u672c\u7f16\u8f91\u5668\u6765\u521b\u5efa\u8fd9\u4e9b .py<\/code> \u6587\u4ef6\u3002<\/p>\n
    \u8fd0\u884c\u7a0b\u5e8f<\/h3>\n
    \u8981\u6267\u884c\u7a0b\u5e8f\uff0c\u8bf7\u5728\u7ec8\u7aef\u4e2d\u4f7f\u7528 python<\/code> \u547d\u4ee4\u6267\u884c\u5b83\u3002\u793a\u4f8b\uff0c\u5728 Unix \u7cfb\u7edf\u7684\u547d\u4ee4\u884c\u4e2d\u662f\u8fd9\u6837\u6267\u884c\u4e00\u4e2a Python \u7a0b\u5e8f\u7684\uff1a<\/p>\n
    \u793a\u4f8b\uff0c\u5728 Unix \u7cfb\u7edf\u7684\u547d\u4ee4\u884c\u4e2d\u6267\u884c\u7a0b\u5e8f\uff1a<\/p>\n
    bash % python hello.py hello world bash % <\/code><\/pre>\n
    \u6216\u8005\uff0c\u4ece Windows shell \u4e2d\u6267\u884c\u4e00\u4e2a Python \u7a0b\u5e8f\uff1a<\/p>\n
    C:SomeFolder>hello.py hello world  C:SomeFolder>c:python36python hello.py hello world <\/code><\/pre>\n
    \u6ce8\u610f\uff1a\u5728 Windows \u7cfb\u7edf\u4e0a\uff0c\u53ef\u80fd\u9700\u8981\u6307\u5b9a Python \u89e3\u91ca\u5668\u7684\u5b8c\u6574\u8def\u5f84\uff0c\u4f8b\u5982 c:python36python<\/code>\u3002\u4f46\u662f\uff0c\u5982\u679c Python \u662f\u4ee5\u901a\u5e38\u7684\u65b9\u5f0f\u5b89\u88c5\u7684\uff0c\u53ef\u80fd\u53ea\u9700\u8981\u8f93\u5165\u7a0b\u5e8f\u6587\u4ef6\u540d\u5373\u53ef\uff0c\u4f8b\u5982 hello.py<\/code>\u3002<\/p>\n
    \u793a\u4f8b\u7a0b\u5e8f<\/h3>\n
    \u8ba9\u6211\u4eec\u89e3\u51b3\u4ee5\u4e0b\u7684\u95ee\u9898\uff1a<\/p>\n
    \n
    \u4e00\u5929\u65e9\u4e0a\uff0c\u60a8\u8d70\u51fa\u53bb\uff0c\u5728\u829d\u52a0\u54e5\u7684\u897f\u5c14\u65af\u5927\u53a6\u65c1\u7684\u4eba\u884c\u9053\u4e0a\u653e 1 \u7f8e\u5143\u949e\u7968\u3002\u4ece\u90a3\u4ee5\u540e\u7684\u6bcf\u4e00\u5929\uff0c\u60a8\u653e\u7684\u949e\u7968\u90fd\u662f\u524d\u4e00\u5929\u7684\u4e24\u500d\u3002\u8fd9\u53e0\u949e\u7968\u9700\u8981\u591a\u957f\u65f6\u95f4\u624d\u80fd\u8d85\u8fc7\u5854\u7684\u9ad8\u5ea6\u3002<\/p>\n<\/blockquote>\n
    \u8fd9\u662f\u7b54\u6848:<\/p>\n
    # sears.py bill_thickness = 0.11 * 0.001 # Meters (0.11 mm) sears_height = 442 # Height (meters) num_bills = 1 day = 1  while num_bills * bill_thickness < sears_height:     print(day, num_bills, num_bills * bill_thickness)     day = day + 1     num_bills = num_bills * 2  print('Number of days', day) print('Number of bills', num_bills) print('Final height', num_bills * bill_thickness) <\/code><\/pre>\n
    \u5f53\u6267\u884c sears.py<\/code> \u7a0b\u5e8f\u7684\u65f6\u5019\uff0c\u4f1a\u5f97\u5230\u4e0b\u9762\u7684\u8f93\u51fa\uff1a<\/p>\n
    bash % python3 sears.py 1 1 0.00011 2 2 0.00022 3 4 0.00044 4 8 0.00088 5 16 0.00176 6 32 0.00352 ... 21 1048576 115.34336 22 2097152 230.68672 Number of days 23  Number of bills 4194304  Final height 461.37344 <\/code><\/pre>\n
    \u4f7f\u7528\u6b64\u7a0b\u5e8f\u4f5c\u4e3a\u6307\u5357\uff0c\u60a8\u53ef\u4ee5\u5b66\u5230\u8bb8\u591a\u91cd\u8981\u7684\u5173\u4e8e Python \u7684\u6838\u5fc3\u6982\u5ff5\u3002<\/p>\n
    \u8bed\u53e5<\/h3>\n
    \u4e00\u4e2a Python \u7a0b\u5e8f\u662f\u7531\u4e00\u7cfb\u5217\u7684\u8bed\u53e5\u7ec4\u6210\u3002<\/p>\n
    a = 3 + 4 b = a * 2 print(b) <\/code><\/pre>\n
    \u6bcf\u4e2a\u8bed\u53e5\u4ee5\u6362\u884c\u7b26\u7ec8\u6b62\u3002\u8bed\u53e5\u4f1a\u4e00\u4e2a\u63a5\u4e00\u4e2a\u5730\u6267\u884c\uff0c\u76f4\u5230\u63a7\u5236\u6d41\u8fbe\u5230\u6587\u4ef6\u7684\u672b\u5c3e\u3002<\/p>\n
    \u6ce8\u91ca<\/h3>\n
    \u6ce8\u91ca\u662f\u4e0d\u4f1a\u88ab\u89e3\u91ca\u5668\u6267\u884c\u7684\u6587\u672c\u3002<\/p>\n
    a = 3 + 4 # This is a comment b = a * 2 print(b) <\/code><\/pre>\n
    \u6ce8\u91ca\u7531 #<\/code> \u53f7\u8868\u793a\uff0c\u5e76\u5ef6\u4f38\u5230\u884c\u7684\u672b\u5c3e\u3002<\/p>\n
    \u53d8\u91cf<\/h3>\n
    \u53d8\u91cf\u662f\u4e00\u4e2a\u503c\u7684\u540d\u79f0\u3002\u53ef\u4ee5\u4f7f\u7528\u4ece a \u5230 z \u7684\u5b57\u6bcd\uff08\u5c0f\u5199\u548c\u5927\u5199\u90fd\u53ef\u4ee5\uff09\u8868\u793a\uff0c\u4e5f\u53ef\u4ee5\u4f7f\u7528\u4e0b\u5212\u7ebf _<\/code> \u7b26\u53f7\u8868\u793a\u3002\u6570\u5b57\u4e5f\u53ef\u4ee5\u4f5c\u4e3a\u53d8\u91cf\u540d\u7684\u4e00\u90e8\u5206\uff0c\u4f46\u7b2c\u4e00\u4e2a\u5b57\u7b26\u9664\u5916\u3002<\/p>\n
    height = 442 # valid _height = 442 # valid height2 = 442 # valid 2height = 442 # invalid <\/code><\/pre>\n
    \u7c7b\u578b<\/h3>\n
    \u53d8\u91cf\u4e0d\u9700\u8981\u4f7f\u7528\u503c\u7684\u7c7b\u578b\u8fdb\u884c\u58f0\u660e\u3002\u7c7b\u578b\u4e0e\u53f3\u4fa7\u7684\u503c\u5173\u8054\uff0c\u800c\u4e0d\u662f\u53d8\u91cf\u540d\u3002<\/p>\n
    height = 442           # An integer height = 442.0         # Floating point height = 'Really tall' # A string <\/code><\/pre>\n
    Python \u662f\u52a8\u6001\u8bed\u8a00\u3002\u5f53\u7a0b\u5e8f\u6267\u884c\u65f6\uff0c\u53d8\u91cf\u7684\u611f\u77e5\u201c\u7c7b\u578b\u201d\u53ef\u80fd\u4f1a\u53d1\u751f\u6539\u53d8\uff0c\u8fd9\u53d6\u51b3\u4e8e\u8d4b\u7ed9\u53d8\u91cf\u7684\u5f53\u524d\u503c\u3002<\/p>\n
    \u5927\u5c0f\u5199\u654f\u611f<\/h3>\n
    Python \u8bed\u8a00\u662f\u5927\u5c0f\u5199\u654f\u611f\u7684\uff08\u5373\u533a\u5206\u5927\u5c0f\u5199\uff09\uff0c\u5927\u5199\u5b57\u6bcd\u548c\u5c0f\u5199\u5b57\u6bcd\u88ab\u8ba4\u4e3a\u662f\u4e0d\u540c\u7684\u5b57\u6bcd\u3002\u4e0b\u9762\u8fd9\u4e9b\u90fd\u662f\u4e0d\u540c\u7684\u53d8\u91cf\uff1a<\/p>\n
    name = 'Jake' Name = 'Elwood' NAME = 'Guido' <\/code><\/pre>\n
    Python \u8bed\u8a00\u81ea\u5e26\u7684\u8bed\u53e5\u603b\u662f\u5c0f\u5199\uff1a<\/p>\n
    while x < 0:   # OK WHILE x < 0:   # ERROR <\/code><\/pre>\n
    \u5faa\u73af<\/h3>\n
    while<\/code> \u8bed\u53e5\u6267\u884c\u4e00\u4e2a\u5faa\u73af\uff1a<\/p>\n
    while num_bills * bill_thickness < sears_height:     print(day, num_bills, num_bills * bill_thickness)     day = day + 1     num_bills = num_bills * 2  print('Number of days', day) <\/code><\/pre>\n
    \u53ea\u8981 while<\/code> \u4e4b\u540e\u7684\u8868\u8fbe\u5f0f\u7684\u503c\u662f true<\/code> \uff0cwhile<\/code> \u4e0b\u9762\u7f29\u8fdb\u7684\u8bed\u53e5\u5c31\u4f1a\u88ab\u6267\u884c\u3002<\/p>\n
    \u7f29\u8fdb<\/h3>\n
    \u7f29\u8fdb\u7528\u4e8e\u8868\u793a\u653e\u5728\u4e00\u8d77\u7684\u8bed\u53e5\u7ec4\u3002\u8003\u8651\u524d\u9762\u7684\u793a\u4f8b\uff1a<\/p>\n
    while num_bills * bill_thickness < sears_height:     print(day, num_bills, num_bills * bill_thickness)     day = day + 1     num_bills = num_bills * 2  print('Number of days', day) <\/code><\/pre>\n
    \u7f29\u8fdb\u5c06\u4e0b\u9762\u7684\u8bed\u53e5\u5206\u7ec4\u4e3a\u4e00\u4e2a\u91cd\u590d\u7684\u64cd\u4f5c\uff1a<\/p>\n
        print(day, num_bills, num_bills * bill_thickness)     day = day + 1     num_bills = num_bills * 2 <\/code><\/pre>\n
    \u56e0\u4e3a\u5728\u672b\u5c3e\u7684 print()<\/code> \u8bed\u53e5\uff08\u5373 print('Number of days', day)<\/code>\uff09\u6ca1\u6709\u7f29\u8fdb\uff0c\u6240\u4ee5\u4e0d\u5c5e\u4e8e\u5faa\u73af\u3002\u7a7a\u884c\u53ea\u662f\u4e3a\u4e86\u53ef\u8bfb\u6027\uff0c\u5e76\u4e0d\u5f71\u54cd\u7a0b\u5e8f\u7684\u6267\u884c\u3002<\/p>\n
    \u7f29\u8fdb\u7684\u6700\u4f73\u5b9e\u8df5<\/h3>\n
      \n
    • \u4f7f\u7528\u7a7a\u683c\uff08 spaces \uff09\u800c\u4e0d\u662f\u5236\u8868\u7b26\uff08 tabs \uff09\u3002<\/li>\n
    • \u6bcf\u7ea7\u4f7f\u7528\u56db\u4e2a\u7a7a\u683c\u3002<\/li>\n
    • \u4f7f\u7528\u652f\u6301 Python \u7684\u7f16\u8f91\u5668\u3002<\/li>\n<\/ul>\n
      Python \u552f\u4e00\u7684\u8981\u6c42\u5c31\u662f\u540c\u4e00\u4ee3\u7801\u5757\u5185\u7684\u7f29\u8fdb\u5fc5\u987b\u4e00\u81f4\u3002\u4f8b\u5982\uff0c\u4e0b\u9762\u7684\u7f29\u8fdb\u662f\u9519\u8bef\u7684\uff1a<\/p>\n
      while num_bills * bill_thickness < sears_height:     print(day, num_bills, num_bills * bill_thickness)         day = day + 1 # ERROR     num_bills = num_bills * 2 <\/code><\/pre>\n
      \u6761\u4ef6\u8bed\u53e5<\/h3>\n
      if<\/code> \u8bed\u53e5\u7528\u6765\u6267\u884c\u4e00\u4e2a\u6761\u4ef6\uff1a<\/p>\n
      if a > b:     print('Computer says no') else:     print('Computer says yes') <\/code><\/pre>\n
      \u4e3a\u4e86\u68c0\u67e5\u591a\u4e2a\u6761\u4ef6\uff0c\u53ef\u4ee5\u4f7f\u7528 elif<\/code>\u6765\u6dfb\u52a0\u989d\u5916\u7684\u68c0\u67e5\u3002<\/p>\n
      if a > b:     print('Computer says no') elif a == b:     print('Computer says yes') else:     print('Computer says maybe') <\/code><\/pre>\n
      \u8f93\u51fa<\/h3>\n
      print<\/code> \u51fd\u6570\u5c06\u4f20\u5165\u7684\u53c2\u6570\u503c\u8f93\u51fa\u6210\u4e00\u884c\u6587\u672c\u3002<\/p>\n
      print('Hello world!') # Prints the text 'Hello world!' <\/code><\/pre>\n
      \u4e5f\u53ef\u4ee5\u5c06\u53d8\u91cf\u8fdb\u884c\u8f93\u51fa\u3002\u8f93\u51fa\u7684\u6587\u672c\u5c06\u662f\u53d8\u91cf\u7684\u503c\uff0c\u800c\u4e0d\u662f\u53d8\u91cf\u7684\u540d\u5b57\u3002<\/p>\n
      x = 100 print(x) # Prints the text '100' <\/code><\/pre>\n
      \u5982\u679c\u5c06\u4e24\u4e2a\u4ee5\u4e0a\u7684\u503c\u4f20\u9012\u7ed9 print<\/code> \u51fd\u6570\uff0c\u5b83\u4eec\u5728\u8f93\u51fa\u7684\u65f6\u5019\u88ab\u7a7a\u683c\u5206\u5f00\u3002<\/p>\n
      name = 'Jake' print('My name is', name) # Print the text 'My name is Jake' <\/code><\/pre>\n
      print()<\/code> \u51fd\u6570\u603b\u662f\u5c06\u6362\u884c\u7b26\u653e\u5728\u6700\u540e\u3002<\/p>\n
      print('Hello') print('My name is', 'Jake') <\/code><\/pre>\n
      \u4e0a\u9762\u7684\u4ee3\u7801\u4f1a\u8f93\u51fa\u5982\u4e0b\u7684\u5185\u5bb9:<\/p>\n
      Hello My name is Jake <\/code><\/pre>\n
      \u989d\u5916\u7684\u6362\u884c\u7b26\u53ef\u4ee5\u88ab\u6291\u5236:<\/p>\n
      print('Hello', end=' ') print('My name is', 'Jake') <\/code><\/pre>\n
      \u4e0a\u9762\u7684\u4ee3\u7801\u5c06\u4f1a\u8f93\u51fa\u5982\u4e0b\u5185\u5bb9:<\/p>\n
      Hello My name is Jake <\/code><\/pre>\n
      \u7528\u6237\u8f93\u5165<\/h3>\n
      \u8981\u8bfb\u53d6\u4e00\u884c\u7c7b\u578b\u5316\u7684\u7528\u6237\u8f93\u5165\uff0c\u53ef\u4ee5\u4f7f\u7528 input()<\/code> \u51fd\u6570\uff1a<\/p>\n
      name = input('Enter your name:') print('Your name is', name) <\/code><\/pre>\n
      input()<\/code>\u51fd\u6570\u5411\u7528\u6237\u8f93\u51fa\u4e00\u53e5\u63d0\u793a\uff0c\u5e76\u4e14\u8fd4\u56de\u4ed6\u4eec\u7684\u54cd\u5e94\u3002<\/p>\n
      \u8fd9\u5bf9\u4e8e\u4e00\u4e2a\u7b80\u77ed\u7684\u7a0b\u5e8f\u3001\u5b66\u4e60\u7ec3\u4e60\u6216\u8005\u7b80\u5355\u7684\u8c03\u8bd5\u662f\u975e\u5e38\u6709\u7528\u7684\u3002<\/p>\n
      \u4f46\u8fd9\u5e76\u672a\u5e7f\u6cdb\u5e94\u7528\u4e8e\u5b9e\u9645\u7684\u7a0b\u5e8f\u4e2d\u3002<\/p>\n
      pass \u8bed\u53e5<\/h3>\n
      \u6709\u65f6\u5019\u9700\u8981\u6307\u5b9a\u4e00\u4e2a\u7a7a\u7684\u4ee3\u7801\u5757\uff0c\u90a3\u4e48\u53ef\u4ee5\u4f7f\u7528 pass<\/code> \u5173\u952e\u5b57\u3002<\/p>\n
      if a > b:     pass else:     print('Computer says false') <\/code><\/pre>\n
      pass<\/code> \u8bed\u53e5\u4e5f\u79f0\u4e3a \u201c\u65e0\u64cd\u4f5c\u201d \u8bed\u53e5\uff0c\u5b83\u4ec0\u4e48\u4e5f\u4e0d\u505a\u3002\u5b83\u7528\u4f5c\u8bed\u53e5\u7684\u5360\u4f4d\u7b26\uff0c\u53ef\u80fd\u4ee5\u540e\u4f1a\u88ab\u6dfb\u52a0\u3002<\/p>\n
      \u4e60\u9898<\/h2>\n
      \u8fd9\u662f\u9700\u8981\u521b\u5efa Python \u6587\u4ef6\u5e76\u4e14\u8fd0\u884c\u8fd9\u4e2a\u6587\u4ef6\u7684\u7b2c\u4e00\u7ec4\u7ec3\u4e60\u3002\u4ece\u73b0\u5728\u5f00\u59cb\uff0c\u5047\u5b9a\u4f60\u6b63\u5728\u7f16\u8f91\u7684\u6587\u4ef6\u4f4d\u4e8epractical-python\/Work\/<\/code> \u76ee\u5f55\u3002\u4e3a\u4e86\u5e2e\u60a8\u627e\u5230\u5408\u9002\u7684 \u4f4d\u7f6e\uff0c\u5df2\u7ecf\u521b\u5efa\u4e86\u8bb8\u591a\u5177\u6709\u5408\u9002\u7684\u6587\u4ef6\u540d\u7684\u7a7a\u7684\u542f\u52a8\u6587\u4ef6\u3002\u8bf7\u627e\u5230\u5728\u7b2c\u4e00\u4e2a\u7ec3\u4e60\u4e2d\u4f7f\u7528\u7684Work\/bounce.py<\/code>\u6587\u4ef6\u3002<\/p>\n
      \u4e60\u9898 1.5: \u5f39\u8df3\u7403<\/h3>\n
      \u4e00\u4e2a\u6a61\u80f6\u7403\u4ece 100 \u7c73\u9ad8\u7684\u5730\u65b9\u843d\u4e0b\u6765\uff0c\u7403\u6bcf\u6b21\u649e\u5230\u5730\u9762\u65f6\u5f39\u5230\u539f\u6765\u9ad8\u5ea6\u7684 3\/5 \u3002\u7f16\u5199\u4e00\u4e2a\u7a0b\u5e8f bounce.py<\/code> \uff0c\u8f93\u51fa\u4e00\u5f20\u8868\u683c\uff0c\u663e\u793a\u524d 10 \u6b21\u53cd\u5f39\u7684\u9ad8\u5ea6\u3002<\/p>\n
      \u7a0b\u5e8f\u751f\u6210\u7684\u8868\u683c\u5927\u6982\u50cf\u4e0b\u9762\u8fd9\u6837\uff1a<\/p>\n
      1 60.0 2 36.0 3 21.599999999999998 4 12.959999999999999 5 7.775999999999999 6 4.6655999999999995 7 2.7993599999999996 8 1.6796159999999998 9 1.0077695999999998 10 0.6046617599999998 <\/code><\/pre>\n
      \u6ce8\u610f\uff1a\u5982\u679c\u4f7f\u7528 round() \u51fd\u6570\uff0c\u53ef\u4ee5\u4f7f\u8f93\u51fa\u7a0d\u5fae\u7b80\u6d01\u4e00\u4e9b\u3002\u8bf7\u5c1d\u8bd5\u4f7f\u7528 round() \u51fd\u6570\u5c06\u8f93\u51fa\u56db\u820d\u4e94\u5165\u5230 \u5c0f\u6570\u70b9\u540e 4 \u4f4d\u3002<\/p>\n
      1 60.0 2 36.0 3 21.6 4 12.96 5 7.776 6 4.6656 7 2.7994 8 1.6796 9 1.0078 10 0.6047 <\/code><\/pre>\n
      \u4e60\u9898 1.6: \u8c03\u8bd5<\/h3>\n
      \u4e0b\u9762\u7684\u4ee3\u7801\u7247\u6bb5\u5305\u542b\u6765\u81ea\u4e8e\u897f\u5c14\u65af\u5927\u53a6\u95ee\u9898<\/strong> \u7684\u4ee3\u7801\uff0c\u5b83\u8fd8\u6709\u4e00\u4e2a bug\uff1a<\/p>\n
      # sears.py  bill_thickness = 0.11 * 0.001    # Meters (0.11 mm) sears_height   = 442             # Height (meters) num_bills      = 1 day            = 1  while num_bills * bill_thickness < sears_height:     print(day, num_bills, num_bills * bill_thickness)     day = days + 1     num_bills = num_bills * 2  print('Number of days', day) print('Number of bills', num_bills) print('Final height', num_bills * bill_thickness) <\/code><\/pre>\n
      \u5c06\u4e0a\u9762\u663e\u793a\u7684\u4ee3\u7801\u590d\u5236\u5e76\u7c98\u8d34\u5230\u4e00\u4e2a\u540d\u4e3a sears.py<\/code>\u7684\u65b0\u7a0b\u5e8f\u4e2d\u3002\u5f53\u6267\u884c sears.py<\/code> \u91cc\u7684\u4ee3\u7801\u65f6\uff0c\u5c06\u4f1a\u6536\u5230\u4e00\u6761\u5bfc\u81f4\u7a0b\u5e8f\u5954\u6e83\u7684\u9519\u8bef\u4fe1\u606f\u3002\u9519\u8bef\u4fe1\u606f\u5982\u4e0b\u6240\u793a\uff1a<\/p>\n
      Traceback (most recent call last):   File \"sears.py\", line 10, in <module>     day = days + 1 NameError: name 'days' is not defined <\/code><\/pre>\n
      \u8bfb\u53d6\u9519\u8bef\u4fe1\u606f\u662f Python \u4ee3\u7801\u7684\u91cd\u8981\u7ec4\u6210\u90e8\u5206\u3002\u5982\u679c\u7a0b\u5e8f\u5954\u6e83\uff0c\u5219\u56de\u6eaf\u6d88\u606f\u7684\u6700\u540e\u4e00\u884c\u662f\u7a0b\u5e8f\u4e3a\u4ec0\u4e48\u5954\u6e83\u7684\u5b9e\u9645\u539f\u56e0\u3002\u5728\u6b64\uff08NameError: name 'days' is not defined<\/code>\uff09\u4e4b\u4e0a\uff0c\u4f60\u5e94\u8be5\u53ef\u4ee5\u770b\u5230\u6e90\u4ee3\u7801\u7247\u6bb5\uff08 day = days + 1<\/code>\uff09\u3001\u53ef\u8bc6\u522b\u7684\u6587\u4ef6\u540d\uff08 sears.py<\/code>\uff09\u548c\u9519\u8bef\u4ee3\u7801\u7684\u884c\u53f7\uff08 line 10<\/code>\uff09\u3002<\/p>\n
        \n
      • \u54ea\u884c\u662f\u9519\u8bef\u7684\uff1f<\/li>\n
      • \u9519\u8bef\u662f\u4ec0\u4e48\uff1f<\/li>\n
      • \u89e3\u51b3\u9519\u8bef\u3002<\/li>\n
      • \u6210\u529f\u8fd0\u884c\u7a0b\u5e8f\u3002Run the program successfully<\/li>\n<\/ul>\n
        \u6ce8\uff1a\u5b8c\u6574\u7ffb\u8bd1\u89c1 https:\/\/github.com\/codists\/practical-python-zh<\/p>\n<\/p><\/div>\n
         \u5927\u4f6c\u6709\u8a71\u8aaa<\/b> (7<\/span>)        <\/div>\n
         <\/div>\n<\/p><\/div>\n<\/p><\/div>\n
          \n
        • \n
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          \n
           \u8cc7\u6df1\u5927\u4f6c : renmu123 <\/span>  <\/div>\n
           <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                       pull request \u76f4\u63a5\u4e0d\u7ffb\u8bd1\u6216\u8005\u770b\u4e00\u4e0b github \u5b98\u65b9\u6587\u6863\u600e\u4e48\u7ffb\u8bd1\u518d\u52a0\u4e2a(pull request)\u3002
          \u5176\u4e2d\u6709\u51e0\u4e2a\u6570\u5b57\u548c\u4e2d\u6587\u5b57\u7b26\u4e4b\u95f4\u6ca1\u6709\u7a7a\u683c\u3002
          \u6211\u662f\u503e\u5411\u628a you \u7ffb\u8bd1\u6210\u4f60\u800c\u4e0d\u662f\u60a8                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
        • \n
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           \u8cc7\u6df1\u5927\u4f6c : renmu123 <\/span>  <\/div>\n
           <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                       \u770b\u8d77\u6765\u8fd8\u662f\u6709\u7ffb\u8bd1\u8154\u7684\u611f\u89c9\uff0c\u4e00\u5bb6\u4e4b\u8a00                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
        • \n
          \n
          \n
           \u8cc7\u6df1\u5927\u4f6c : hsfzxjy <\/span>  <\/div>\n
           <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                       \u611f\u89c9\u6709\u4e9b\u7ffb\u8bd1\u8154\u3002\u82f1\u6587\u7ffb\u8bd1\u6210\u4e2d\u6587\u6709\u4e9b\u65f6\u5019\u9700\u8981\u53d8\u6362\u53e5\u5f0f\uff0c\u4ee5\u7b26\u5408\u4e2d\u6587\u7684\u9605\u8bfb\u4e60\u60ef\u3002\u4e3e\u51e0\u4e2a\u4f8b\u5b50\uff1a<\/p>\n
          \u300c\u53ef\u4ee5\u4f7f\u7528\u4ece a \u5230 z \u7684\u5b57\u6bcd\uff08\u5c0f\u5199\u548c\u5927\u5199\u90fd\u53ef\u4ee5\uff09\u8868\u793a\uff0c\u4e5f\u53ef\u4ee5\u4f7f\u7528\u4e0b\u5212\u7ebf _ \u7b26\u53f7\u8868\u793a\u3002\u300d->\u300c\u53d8\u91cf\u540d\u53ef\u4ee5\u5305\u542b\u4ece a \u5230 z \u7684\u5b57\u6bcd\uff08\u5c0f\u5199\u6216\u5927\u5199\uff09\uff0c\u4e5f\u53ef\u4ee5\u5305\u542b\u4e0b\u5212\u7ebf _ \u7b26\u53f7\u3002\u300d<\/p>\n
          \u300c\u56e0\u4e3a\u5728\u672b\u5c3e\u7684 print() \u8bed\u53e5\uff08\u5373 print(‘Number of days’, day)\uff09\u6ca1\u6709\u7f29\u8fdb\uff0c\u6240\u4ee5\u4e0d\u5c5e\u4e8e\u5faa\u73af\u3002\u300d->\u300c\u5728\u672b\u5c3e\u7684 print() \u8bed\u53e5\uff08\u5373 print(‘Number of days’, day)\uff09\u6ca1\u6709\u7f29\u8fdb\uff0c\u56e0\u6b64\u4e0d\u5c5e\u4e8e\u5faa\u73af\u3002\u300d<\/p>\n
          \u300c\u4f7f\u7528\u6b64\u7a0b\u5e8f\u4f5c\u4e3a\u6307\u5357\uff0c\u60a8\u53ef\u4ee5\u5b66\u5230\u8bb8\u591a\u91cd\u8981\u7684\u5173\u4e8e Python \u7684\u6838\u5fc3\u6982\u5ff5\u3002\u300d->\u300c\u4f60\u53ef\u4ee5\u4ece\u8fd9\u4e2a\u7a0b\u5e8f\u4e2d\u5b66\u5230\u8bb8\u591a Python \u91cd\u8981\u7684\u6838\u5fc3\u6982\u5ff5\u3002\u300d<\/p>\n
          \u300c\u5f53\u6267\u884c sears.py \u91cc\u7684\u4ee3\u7801\u65f6\uff0c\u5c06\u4f1a\u6536\u5230\u4e00\u6761\u5bfc\u81f4\u7a0b\u5e8f\u5954\u6e83\u7684\u9519\u8bef\u4fe1\u606f\u3002\u300d->\u300c\u82e5\u6267\u884c sears.py \u91cc\u7684\u4ee3\u7801\uff0c\u7a0b\u5e8f\u4f1a\u5d29\u6e83\uff0c\u5e76\u5c55\u793a\u4e00\u6761\u9519\u8bef\u4fe1\u606f\u3002\u300d\uff08\u6b64\u5904\u539f\u6587 ’causes the program to crash’ \u4fee\u9970 error message\uff0c\u4e2a\u4eba\u8ba4\u4e3a\u662f\u4e0d\u6b63\u786e\u7684\uff09<\/p>\n
          \u300c\u8bfb\u53d6\u9519\u8bef\u4fe1\u606f\u662f Python \u4ee3\u7801\u7684\u91cd\u8981\u7ec4\u6210\u90e8\u5206\u3002\u300d->\u300c\u8bfb\u61c2\u9519\u8bef\u4fe1\u606f\u662f\u7f16\u5199 Python \u4ee3\u7801\u7684\u91cd\u8981\u4e00\u6b65\u3002\u300d                                                            <\/p><\/div>\n<\/p><\/div>\n<\/li>\n
        • \n
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          \n
           \u4e3b<\/span> \u8cc7\u6df1\u5927\u4f6c : codists <\/span>  <\/div>\n
           <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                       @renmu123 
          \u611f\u8c22\u6307\u70b9\u3002\u5173\u4e8e\u5927\u4f6c\u6240\u8bf4\u7684\u4e09\u70b9\u95ee\u9898\uff1a
          1 \u3001pull requests\uff0c\u6307\u7684\u5e94\u8be5\u662f README.md \u6587\u4ef6\u91cc\u9762\u7684\u3002\u540e\u7eed\u6539\u4e3a\u201c\u62c9\u53d6\u8bf7\u6c42\uff08 pull requests \uff09\u201d\u3002\u53c2\u8003\u8d44\u6599\uff1a https:\/\/docs.github.com\/cn\/github
          2 \u3001\u6570\u5b57\u548c\u4e2d\u6587\u5b57\u7b26\u4e4b\u95f4\u6ca1\u6709\u7a7a\u683c\u3002\u540e\u7eed\u4fee\u6539\u3002
          3 \u3001\u5173\u4e8e\u201cyou\u201d\u7684\u7ffb\u8bd1\u95ee\u9898\uff0c\u6211\u4e5f\u66f4\u503e\u5411\u4e8e\u4e0d\u7ffb\u8bd1\u6216\u8005\u7ffb\u8bd1\u6210\u201c\u4f60\u201d\u3001\u201c\u6211\u4eec\u201d\u3002\u4ecb\u4e8e\u8fd9\u4e0d\u662f\u5b98\u65b9\u6587\u6863\uff0c\u540e\u7eed\u9009\u62e9\u4e0d\u7ffb\u8bd1\u6216\u8005\u7ffb\u8bd1\u6210\u201c\u4f60\u201d\uff0c\u201c\u6211\u4eec\u201d\u3002
          \u4ee5\u4e0a\u4e09\u70b9\u95ee\u9898\u540e\u7eed\u90fd\u5728 github \u4e0a\u4fee\u6539\uff0c\u5404\u5e73\u53f0\u6587\u7ae0\u4e0d\u518d\u4fee\u6539\uff0c\u4e5f\u5e0c\u671b\u5927\u4f6c\u6709\u65f6\u95f4\u80fd\u591f\u591a\u591a\u5728 github \u4e0a\u63d0 issue \u3002\u518d\u6b21\u611f\u8c22\u3002                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
        • \n
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           \u4e3b<\/span> \u8cc7\u6df1\u5927\u4f6c : codists <\/span>  <\/div>\n
           <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                       @hsfzxjy 
          \u611f\u8c22\u6307\u70b9\u3002\u5173\u4e8e\u5927\u4f6c\u6240\u8bf4\u7684\u51e0\u70b9\u95ee\u9898\uff1a
          1 \u3001\u7ffb\u8bd1\u8154\u95ee\u9898\u3002\u8fd9\u4e2a\u95ee\u9898\u786e\u5b9e\u5b58\u5728\uff0c\u4e3b\u8981\u8fd8\u662f\u6211\u529f\u592b\u4e0d\u591f\uff0c\u7ffb\u8bd1\u7684\u65f6\u5019\u751f\u6015\u6f0f\u6389\u4e00\u4e9b\u5185\u5bb9\uff0c\u6240\u4ee5\u5c3d\u91cf\u4fdd\u6301\u548c\u539f\u6587\u4e00\u81f4\u3002\u4ece\u7ed3\u679c\u6765\u770b\uff0c\u786e\u5b9e\u4e0d\u7406\u60f3\uff0c\u540e\u7eed\u6211\u5c06\u4e0d\u65ad\u6539\u8fdb\uff0c\u4f7f\u7ffb\u8bd1\u66f4\u7b26\u5408\u4e2d\u6587\u7684\u9605\u8bfb\u4e60\u60ef\u3002
          2 \u3001\u201ccauses the program to crash\u201d \u7684\u95ee\u9898\u3002\u5f53\u521d\u7ffb\u8bd1\u7684\u65f6\u5019\u786e\u5b9e\u758f\u5ffd\u4e86\uff0c\u73b0\u4fee\u6539\u4e3a\u201c\u5c06\u4f1a\u6536\u5230\u4e00\u6761\u663e\u793a\u7a0b\u5e8f\u4e3a\u4ec0\u4e48\u5954\u6e83\u7684\u9519\u8bef\u4fe1\u606f\u201d
          \u5982\u8fd8\u6709\u5176\u5b83\u95ee\u9898\uff0c\u671f\u5f85\u4e0e\u5927\u4f6c\u7ee7\u7eed\u63a2\u8ba8\uff0c\u518d\u6b21\u611f\u8c22\u3002                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
        • \n
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           \u8cc7\u6df1\u5927\u4f6c : IgniteWhite <\/span>  <\/div>\n
           <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                       \u5954\u6e83 -> \u5d29\u6e83                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
        • \n
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           \u4e3b<\/span> \u8cc7\u6df1\u5927\u4f6c : codists <\/span>  <\/div>\n
           <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                       @IgniteWhite 
          \u611f\u8c22\u5927\u4f6c\u6307\u70b9\uff0c\u662f\u6211\u624b\u6b8b\u3002                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
        • \n","protected":false},"excerpt":{"rendered":"
          \u7ffb\u8bd1\uff1a\u300a\u5b9e\u7528\u7684 Python \u7f16\u7a0b…<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[],"tags":[],"_links":{"self":[{"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/posts\/341271"}],"collection":[{"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=341271"}],"version-history":[{"count":0,"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/posts\/341271\/revisions"}],"wp:attachment":[{"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=341271"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=341271"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=341271"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}