{"rsdb":{"rid":"309164","subhead":"","postdate":"0","aid":"224326","fid":"77","uid":"1","topic":"1","content":"
Python \u57fa\u7840\u7bc7 -Life Is Short You Need Python <\/p>\n
<\/p>\n
<\/p>\n
\nprint<\/strong> \u201chello world\u201d<\/p>\n<\/blockquote>\n
- \u8ba1\u7b97\u5668<\/li>\n<\/ul>
\n1+1<\/p>\n<\/blockquote>\n
- \u683c\u5f0f\u5316\u5b57\u7b26\u4e32<\/li>\n<\/ul>
\nprint<\/strong> \"The total is %0.2f\" %56.3598<\/p>\n<\/blockquote>\n
- \u6ce8\u91ca <\/li>\n<\/ul>
\n# \u5355\u884c\u6ce8\u91ca<\/em><\/p>\n
\"\"\"\u591a\u884c\u6ce8\u91ca\"\"\"<\/em><\/p>\n<\/blockquote>\n
- \u6a21\u5757<\/li>\n<\/ul>
import<\/strong> sys
sys.exit()
<\/blockquote>\n<\/p>\n
Python\u7684\u6570\u636e\u7c7b\u578b<\/h3>\n
\u53d8\u91cf\u7684\u5b9a\u4e49\u3002\u5728python\u4e2d\uff0c\u53d8\u91cf\u7684\u7c7b\u578b\u662f\u7531\u8d4b\u7ed9\u5b83\u7684\u6570\u503c\u5b9a\u4e49\u7684\u3002<\/p>\nq = 7 #q\u5176\u4e3a\u6570\u503c\u578b\u53d8\u91cf<\/em>
q = \"Seven\" #q\u4e3a\u5b57\u7b26\u4e32\u578b\u53d8\u91cf<\/em>
<\/blockquote>\n<\/p>\n
\u57fa\u672c\u6570\u636e\u7c7b\u578b:\u5b57\u7b26\u4e32\uff0c\u6574\u6570\uff0c\u6d6e\u70b9\u6570\uff0c\u865a\u6570\uff0c\u5e03\u5c14\u578b<\/strong>\u3002
\u96c6\u5408\u7c7b\u578b\uff1a\u5217\u8868\uff08List),\u5143\u7ec4\uff08Tuple),\u5b57\u5178\uff08Dictionary\u6216Hash)<\/strong>
<\/p>\nPython\u7684\u6570\u636e\u7c7b\u578b:\u5217\u8868\uff08List)<\/h3>\n
List\u7684\u5b9a\u4e49\u3002<\/p>\n
aList = [23] \u6216\u8005 bList = [1,2,3]
<\/blockquote>\n<\/p>\n
List\u7684\u4f7f\u7528\u3002\u53ef\u4ee5\u50cfc\u8bed\u8a00\u4e2d\u6570\u636e\u4e00\u6837\u5f15\u7528list\u4e2d\u7684\u5143\u7d20\u3002<\/p>\n
print<\/strong> bList[1]
<\/blockquote>\n<\/p>\n
List\u5e38\u7528\u64cd\u4f5c\uff1aappend, del, + ,*, len(list)<\/p>\n
[0] * 5
<\/blockquote>\n<\/p>\n
Python\u7684\u6570\u636e\u7c7b\u578b:\u5217\u8868\uff08\u65b9\u6cd5)
Table3.3.\u5217\u8868\u5bf9\u8c61\u652f\u6301\u7684\u65b9\u6cd5(\u6f14\u793a\uff09<\/p>\nappend(x) count(x) extend(L)
Index(x) insert(i,x) pop(x)
remove(x) reverse() sort()
<\/blockquote>\n
<\/p>\nPython\u7684\u6570\u636e\u7c7b\u578b:\u5143\u7ec4\uff08Tuple)<\/h3>\n
Tuple\u7684\u5b9a\u4e49\u3002<\/p>\n
aTuple = (1, 3, 5)
print<\/strong> aTuple
<\/blockquote>\nList\u7684\u4f7f\u7528\u3002<\/p>\n
- \u5143\u7ec4\u53ef\u4ee5\u7528\u65b9\u62ec\u53f7\u62ec\u8d77\u4e0b\u6807\u505a\u7d22\u5f15<\/li>\n
- \u5143\u7ec4\u4e00\u65e6\u521b\u5efa\u5c31\u4e0d\u80fd\u6539\u53d8<\/li>\n
- \u5217\u8868\u5927\u90e8\u5206\u64cd\u4f5c\u540c\u6837\u9002\u7528\u4e8e\u5143\u7ec4<\/li>\n<\/ol>
<\/p>\n
Python\u7684\u6570\u636e\u7c7b\u578b:\u5b57\u5178\uff08Hash)<\/h3>\n
\u5b57\u5178\u662f\u4e00\u4e2a\u7528\u5927\u62ec\u53f7\u62ec\u8d77\u6765\u7684\u952e\u503c\u5bf9\uff0c\u5b57\u5178\u5143\u7d20\u5206\u4e3a\u4e24\u90e8\u4efd\uff0c\u952e(key)\u548c\u503c\u3002\u5b57\u5178\u662fpython\u4e2d\u552f\u4e00\u5185\u7f6e\u6620\u5c04\u6570\u636e\u7c7b\u578b\u3002\u901a\u8fc7\u6307\u5b9a\u7684\u952e\u4ece\u5b57\u5178\u8bbf\u95ee\u503c\u3002
\u5b57\u5178\u7684\u4f7f\u7528:<\/p>\na = {\u2018a\u2019:\u2019aa\u2019, \u2018b\u2019:\u2019bb\u2019}
a[\u2018c\u2019]=\u2018cc\u2019
a.has_key(\u2018a\u2019)
<\/blockquote>\n<\/p>\n
Python\u7684\u6570\u636e\u7c7b\u578b:\u5b57\u5178\uff08\u5e38\u7528\u65b9\u6cd5)<\/h3>\n
\u5b57\u5178\u7684\u5e38\u7528\u65b9\u6cd5\uff08\u6f14\u793a\uff09\uff1a<\/p>\n
has_key(x) keys() values()
items() clear() copy()
update(x) get(x[,y])
<\/blockquote>\n<\/p>\n
Python \u63a7\u5236\u8bed\u53e5 if<\/h3>\n
Python\u652f\u6301\u4e09\u79cd\u4e0d\u540c\u7684\u63a7\u5236\u7ed3\u6784\uff1aif\uff0cfor\u548cwhile\uff0c\u4e0d\u652f\u6301C\u8bed\u8a00<\/a>\u4e2d\u7684switch\u8bed\u53e5\u3002
(1)if \u8bed\u53e5\u7684\u7528\u6cd5\uff1a<\/p>\nif<\/strong> EXPRESSION1:
STATEMENT1
elif<\/strong> EXPRESSION2:
STATEMENT2
else<\/strong>:
STATEMENT3
<\/blockquote>\n
<\/p>\nPython \u63a7\u5236\u8bed\u53e5 for<\/h3>\n
for\u8bed\u53e5\u7684\u7528\u6cd5\uff1a<\/p>\n
mylist = \"for statement\"
for<\/strong> word in<\/strong> mylist:
print<\/strong> word
else<\/strong>:
print<\/strong> \"End list\"
<\/blockquote>\n
<\/p>\nPython \u63a7\u5236\u8bed\u53e5 while<\/h3>\n
while\u8bed\u53e5\u7684\u7528\u6cd5\uff1a<\/p>\n
a = 0
while<\/strong> a > 5:
a = a + 1
print<\/strong> a
else<\/strong>:
print<\/strong> \"a's value is five\"
<\/blockquote>\n<\/p>\n
Python \u5faa\u73af\u4e2d\u7684\u63a7\u5236\u8bed\u53e5<\/h3>\n
\u5faa\u73af\u4e2d\u7684\u63a7\u5236\u8bed\u53e5<\/p>\n
<\/strong><\/p>\nbreak: \u7ec8\u6b62\u5f53\u524d\u5faa\u73af
<\/strong><\/p>\ncontinue: \u7ec8\u6b62\u672c\u6b21\u5faa\u73af
<\/strong><\/p>\npass: \u4ec0\u4e48\u4e8b\u90fd\u4e0d\u9519<\/strong><\/p>\n
<\/p>\n
Python \u51fd\u6570<\/h3>\n
\u51fd\u6570\u5b9a\u4e49\uff1a<\/p>\n
def<\/strong> function_name(arg1,arg2[,...]):
statement
[return<\/strong> value]
<\/blockquote>\n\u51fd\u6570\u540d\uff1a<\/p>\n
- \u51fd\u6570\u540d\u5fc5\u987b\u4ee5\u4e0b\u5212\u7ebf\u6216\u5b57\u6bcd\u5f00\u5934\uff0c\u53ef\u4ee5\u5305\u542b\u4efb\u610f\u5b57\u6bcd\u3001\u6570\u5b57\u6216\u4e0b\u5212\u7ebf\u7684\u7ec4\u5408\u3002\u4e0d\u80fd\u4f7f\u7528\u4efb\u4f55\u7684\u6807\u70b9\u7b26\u53f7\uff1b<\/li>\n
- \u51fd\u6570\u540d\u662f\u533a\u5206\u5927\u5c0f\u5199\u7684\u3002<\/li>\n
- \u51fd\u6570\u540d\u4e0d\u80fd\u662f\u4fdd\u7559\u5b57\u3002<\/li>\n<\/ol>
<\/p>\nPython \u51fd\u6570<\/h3>\n
\u4f5c\u7528\u57df\uff1a<\/strong>Python\u4f7f\u7528\u540d\u79f0\u7a7a\u95f4\u7684\u6982\u5ff5\u5b58\u50a8\u5bf9\u8c61\uff0c\u8fd9\u4e2a\u540d\u79f0\u7a7a\u95f4\u5c31\u662f\u5bf9\u8c61\u4f5c\u7528\u7684\u533a\u57df\uff0c \u4e0d\u540c\u5bf9\u8c61\u5b58\u5728\u4e8e\u4e0d\u540c\u7684\u4f5c\u7528\u57df\u3002\u4e0b\u9762\u662f\u4e0d\u540c\u5bf9\u8c61\u7684\u4f5c\u7528\u57df\u89c4\u5219\uff1a<\/p>\n
- \u6bcf\u4e2a\u6a21\u5757\u90fd\u6709\u81ea\u5df2\u7684\u5168\u5c40\u4f5c\u7528\u57df\u3002<\/li>\n
- \u51fd\u6570\u5b9a\u4e49\u7684\u5bf9\u8c61\u5c5e\u5c40\u90e8\u4f5c\u7528\u57df\uff0c\u53ea\u5728\u51fd\u6570\u5185\u6709\u6548\uff0c\u4e0d\u4f1a\u5f71\u54cd\u5168\u5c40\u4f5c\u7528\u57df\u4e2d\u7684\u5bf9\u8c61\u3002<\/li>\n
- \u8d4b\u503c\u5bf9\u8c61\u5c5e\u5c40\u90e8\u4f5c\u7528\u57df\uff0c\u9664\u975e\u4f7f\u7528global\u5173\u952e\u5b57\u8fdb\u884c\u58f0\u660e\u3002<\/li>\n<\/ol>
LGB\u89c4\u5219<\/strong><\/p>\n<\/p>\n
\u5927\u591a\u6570\u540d\u5b57\u5f15\u7528\u5728\u4e09\u4e2a\u4f5c\u7528\u57df\u4e2d\u67e5\u627e\uff1a\u5148\u5c40\u90e8(Local)\uff0c\u6b21\u4e4b\u5168\u5c40(Global)\uff0c\u518d\u6b21\u4e4b\u5185\u7f6e(Build-in)\u3002
<\/p>\nPython \u51fd\u6570<\/h3>\n
\u51fd\u6570\u7684\u53c2\u6570\u7684\u5206\u7c7b\uff1a
\u9ed8\u8ba4\u53c2\u6570\uff1adef<\/strong> function(ARG=VALUE)
\u5143\u7ec4\u53c2\u6570\uff1adef<\/strong> function(*ARG)
\u5b57\u5178\u53c2\u6570\uff1adef<\/strong> function(**ARG)
\u4e00\u4e9b\u89c4\u5219\uff1a<\/p>\n
- \u9ed8\u8ba4\u503c\u5fc5\u987b\u5728\u975e\u9ed8\u8ba4\u53c2\u6570\u4e4b\u540e\uff1b<\/li>\n
- \u5728\u5355\u4e2a\u51fd\u6570\u5b9a\u4e49\u4e2d\uff0c\u53ea\u80fd\u4f7f\u7528\u4e00\u4e2atuple\u53c2\u6570\uff08*ARG\uff09\u548c\u4e00\u4e2a\u5b57\u5178\u53c2\u6570\uff08**ARG\uff09\u3002<\/li>\n
- tuple\u53c2\u6570\u5fc5\u987b\u5728\u8fde\u63a5\u53c2\u6570\u548c\u9ed8\u8ba4\u53c2\u6570\u4e4b\u540e\u3002<\/li>\n
- \u5b57\u5178\u53c2\u6570\u5fc5\u987b\u5728\u6700\u540e\u5b9a\u4e49\u3002<\/li>\n<\/ol>
<\/p>\n
Python \u6a21\u5757<\/h3>\n
\u6a21\u5757\uff1a\u6a21\u5757\u53ef\u628a\u4e00\u4e2a\u590d\u6742\u7684\u7a0b\u5e8f\u6309\u529f\u80fd\u5206\u5f00\uff0c\u5206\u522b\u5b58\u653e\u5230\u4e0d\u540c\u6587\u4ef6\u4e2d\uff0c\u4f7f\u7a0b\u5e8f\u66f4\u5bb9\u6613\u7ef4\u62a4\u548c\u7ba1\u7406\u3002\u5728Python\u4e2d\u7684\u6a21\u5757\u662f\u4e00\u4e2a\u4ee5.py\u7ed3\u5c3e\u7684Python\u4ee3\u7801\u6587\u4ef6\u3002\u53ef\u901a\u8fc7import<\/strong>\u547d\u4ee4\u8f93\u5165\uff0c\u5982\uff1a<\/p>\n
import<\/strong> sys\uff08\u548cc\u4e2dinclude\u8bed\u53e5\u4f3c\u4e4e\u76f8\u4f3c)
<\/blockquote>\n
\u8be5import\u8bed\u53e5\u5171\u6267\u884c\u4e09\u6b65\u64cd\u4f5c\uff1a<\/p>\n
- \u521b\u5efa\u65b0\u7684\u540d\u79f0\u7a7a\u95f4\uff08namespace\uff09\uff0c\u8be5\u540d\u79f0\u7a7a\u95f4\u4e2d\u62e5\u6709\u8f93\u5165\u6a21\u5757\u4e2d\u5b9a\u4e49\u7684\u6240\u6709\u5bf9\u8c61\uff1b<\/li>\n
- \u6267\u884c\u6a21\u5757\u4e2d\u7684\u4ee3\u7801\uff1b<\/li>\n
- \u521b\u5efa\u8be5\u540d\u79f0\u7a7a\u95f4\u7684\u53d8\u91cf\u540d\u3002<\/li>\n<\/ol>
Python \u6a21\u5757
import\u7684\u4f7f\u7528:<\/p>\nimport<\/strong> ftplib as<\/strong> ftp
from<\/strong> ftplib import<\/strong> FTP
<\/blockquote>\n<\/p>\n
Python\u811a\u672c\u4e0e\u6a21\u5757<\/h3>\n
python\u811a\u672c\u548c\u6a21\u5757\u90fd\u662f\u4e00\u4e2a\u4ee5.py\u7ed3\u675f\u7684\u6587\u4ef6\uff0c\u90a3\u7a0b\u5e8f\u662f\u5982\u4f55\u5224\u65ad\u4e00\u4e2a.py\u6587\u4ef6\u662f\u4f5c\u4e3a\u811a\u672c\u8fd8\u662f\u6a21\u5757\u5462\uff1f\u5173\u952e\u662f\u4e00\u4e2a\u540d\u4e3a__name__\u7684\u53d8\u91cf\uff0c\u5982\u679c\u5b83\u7684\u503c\u662f__main__\uff0c\u5219\u662f\u4f5c\u4e3a\u811a\u672c\u76f4\u63a5\u8fd0\u884c\uff0c\u5426\u5219\u662f\u505a\u4e3a\u6a21\u5757\u8fd0\u884c\u7684\u3002
<\/p>\nif<\/strong> __name__ == \u201c__main__\u201d:
main()
<\/blockquote>\n<\/p>\n
Python \u5305(package)<\/h3>\n
\u6211\u4eec\u53ef\u4ee5\u628a\u51e0\u4e2a\u529f\u80fd\u76f8\u8fd1\u7684\u6a21\u5757\u7ec4\u6210\u4e00\u4e2aPython\u5305\uff0c\u5b58\u653e\u5230\u4e00\u4e2a\u76ee\u5f55\u7ed3\u6784\u4e2d\uff0c\u901a\u8fc7\u8f93\u5165\u5305\u7684\u8def\u5f84\u6765\u8c03\u7528\u5bf9\u5bf9\u8c61\u3002
\u4f8b\u5b50\uff1a<\/p>\n\/WebDesign
__init__.py
design.py
draw.py
<\/blockquote>\n\u5176\u4e2d__init__.py\u662f\u5305\u7684\u521d\u59cb\u5316\u6587\u4ef6\uff0c\u53ef\u4ee5\u4e3a\u7a7a\uff0c\u4f46\u662f\u5fc5\u4e0d\u53ef\u5c11\u7684\u3002\u53ef\u4ee5\u4ee5\u4e0b\u5217\u65b9\u5f0f\u5f15\u7528design\u6a21\u5757\uff1a<\/p>\n
import<\/strong> WebDesign.design
<\/blockquote>\n<\/p>\n
Python \u7c7b<\/h3>\n
\u4e00\u4e2a\u7b80\u5355\u7684\u4f8b\u5b50\uff1a<\/p>\n
#!\/usr\/bin\/python
#-*- encoding:utf-8 -*-
class<\/strong> test: #\u5b9a\u4e49\u4e00\u4e2atest\u7c7b
desc = \"\u8fd9\u662f\u4e00\u4e2a\u6d4b\u8bd5\u7c7b\u3002\" #\u5728\u7c7b\u4e2d\u5b9a\u4e49\u4e00\u4e2a\u5c5e\u6027desc
def<\/strong> __init__(self,name1): #\u5bf9\u8c61\u6784\u9020\u51fd\u6570\uff0c\u521d\u59cb\u5316\u7c7b
self.name1 = name1
def <\/strong>show(self,name2): #\u5728\u7c7b\u4e2d\u5b9a\u4e49\u4e00\u4e2a\u65b9\u6cd5show()
print<\/strong> \"hello world\"
print<\/strong> 'name1:',self.name1
print<\/strong> 'name2:',name2
<\/blockquote>\nobj = test(\u2018\u8fd9\u662f\u4f20\u9012\u7ed9name1\u7684\u503c\u2019) #\u751f\u6210test\u7c7b\u7684\u5b9e\u4f8b\u5bf9\u8c61
print<\/strong> obj.desc #\u8c03\u7528\u7c7b\u4e2d\u7684desc\u5c5e\u6027
obj.show('\u8fd9\u662f\u4f20\u9012\u7ed9name2\u7684\u503c') #\u8c03\u7528\u7c7b\u4e2d\u7684show()\u65b9\u6cd5<\/blockquote> <\/div>\n <\/div>","orderid":"0","title":".[Python \u6280\u672f\u57f9\u8bad] \u7b2c\u4e00\u5468\u5e7b\u706f\u7247 "Python \u57fa\u7840\u7bc7"","smalltitle":"","mid":"0","fname":"Python","special_id":"0","bak_id":"0","info":"0","hits":"42","pages":"1","comments":"0","posttime":"2019-05-16 02:48:22","list":"1557946102","username":"admin","author":"","copyfrom":"","copyfromurl":"","titlecolor":"","fonttype":"0","titleicon":"0","picurl":"https:\/\/www.cppentry.com\/upload_files\/","ispic":"0","yz":"1","yzer":"","yztime":"0","levels":"0","levelstime":"0","keywords":"Python<\/A> \u6280\u672f\u57f9\u8bad<\/A> \u7b2c\u4e00<\/A> \u5e7b\u706f\u7247<\/A> "<\/A> \u57fa\u7840<\/A>","jumpurl":"","iframeurl":"","style":"","template":"a:3:{s:4:\"foot\";s:0:\"\";s:8:\"bencandy\";s:0:\"\";s:4:\"head\";s:0:\"\";}","target":"0","ip":"47.106.78.186","lastfid":"0","money":"0","buyuser":"","passwd":"","allowdown":"","allowview":"","editer":"","edittime":"0","begintime":"0","endtime":"0","description":" Python \u57fa\u7840\u7bc7 -Life Is Short You Need Python Python \u7b80\u4ecbPython\u662f\u4e00\u79cd\u5f00\u6e90\u7684 \u3001\u89e3\u6790\u6027\u7684\uff0c\u9762\u5411\u5bf9\u8c61\u7684\u7f16\u7a0b\u8bed\u8a00\u3002 Python\u4f7f\u7528\u4e00\u79cd\u4f18\u96c5\u7684\u8bed\u6cd5\uff0c\u53ef\u8bfb\u6027\u5f3a Python\u652f\u6301\u7c7b\u548c\u591a\u5c42\u7ee7\u627f\u7b49\u7684\u9762\u5411\u5bf9\u8c61\u7f16\u7a0b\u6280..","lastview":"1712792901","digg_num":"0","digg_time":"0","forbidcomment":"0","ifvote":"0","heart":"","htmlname":"","city_id":"0"},"page":"1"}