PythonÖ´ÐÐϵͳÃüÁîµÄ·½·¨
PythonÖÐÖ´ÐÐϵͳÃüÁî³£¼û·½·¨ÓÐÁ½ÖÖ£º
Á½Õß¾ùÐè import os
(1) os.system
# ½ö½öÔÚÒ»¸ö×ÓÖÕ¶ËÔËÐÐϵͳÃüÁ¶ø²»ÄÜ»ñÈ¡ÃüÁîÖ´ÐкóµÄ·µ»ØÐÅÏ¢
system(command) -> exit_status
Execute the command (a string) in a subshell.
# Èç¹ûÔÙÃüÁîÐÐÏÂÖ´ÐУ¬½á¹ûÖ±½Ó´òÓ¡³öÀ´
>>> os.system('ls')
04101419778.CHM bash document media py-django video
11.wmv books downloads Pictures python
all-20061022 Desktop Examples project tools
(2) os.popen
# ¸Ã·½·¨²»µ«Ö´ÐÐÃüÁ·µ»ØÖ´ÐкóµÄÐÅÏ¢¶ÔÏó
popen(command [, mode='r' [, bufsize]]) -> pipe
Open a pipe to/from a command returning a file object.
ÀýÈ磺
>>>tmp = os.popen('ls *.py').readlines()
>>>tmp
Out[21]:
['dump_db_pickle.py\n',
'dump_db_pickle_recs.py\n',
'dump_db_shelve.py\n',
'initdata.py\n',
'__init__.py\n',
'make_db_pickle.py\n',
'make_db_pickle_recs.py\n',
'make_db_shelve.py\n',
'peopleinteract_query.py\n',
'reader.py\n',
'testargv.py\n',
'teststreams.py\n',
'update_db_pickle.py\n',
'writer.py\n']
ºÃ´¦ÔÚÓÚ£º½«·µ»ØµÄ½á¹û¸³ÓÚÒ»±äÁ¿£¬±ãÓÚ³ÌÐòµÄ´¦Àí¡£
Ïà¹ØÎĵµ£º
Èç¹ûpythonµ÷ÓÃÍⲿ³ÌÐò£¬ÐèÒªÖ±½ÓץȥÃüÁîÐеÄÊä³ö£¬ÓÐʲôºÃµÄ°ì·¨ÄØ£¿
ÕâÀïÎÒÃÇÐèÒªÓõ½ os.popen Õâ¸ö¹ÜµÀ£¬È»ºóÓà read¡¢readline»òÕßreadlinesÀ´¶ÁÈ¡ÃüÁîÐÐÊä³ö
#ÐèÒªÖ´ÐеÄÃüÁî
strCommand = 'xxxxxxxxxxxxxxxxx'
#ÓÃpopenÀ´Ö´ÐÐÃüÁîÐÐ
oStdout = os.popen(strCommand)
#¼ÙÉèÊä³öµÄÄÚÈÝÖ»ÓÐÒ»ÐÐ
strStdout = ......
ÔÚ pythonµÄlibĿ¼ÀïÓÐÒ»¸ö£ºthis.py£¬ËüÆäʵÊÇÒþ²Ø×ÅÒ»Ê×Ê«£¬Ô´ÂëÈçÏ£º
s =
"""Gur Mra bs Clguba, ol Gvz Crgref
Ornhgvshy vf orggre guna htyl.
Rkcyvpvg vf orggre guna vzcyvpvg.
Fvzcyr vf orggre guna pbzcyrk.
Pbzcyrk vf ......
PythonÊÇĿǰ¹ã·ºÊ¹ÓõÄÒ»ÃŶ¯Ì¬ÓïÑÔ£¬ÀàËÆJava£¬Ô´´úÂë±ØÐëÊ×ÏÈÓɱàÒëÆ÷ת»»³É×Ö½ÚÂ루byte code£©£¬È»ºóÔÙÓɽâÊÍÆ÷À´Ö´ÐÐ×Ö½ÚÂë¡£ÓëJava²»Í¬µÄÊÇ£¬PythonµÄ±àÒëÆ÷ºÍ½âÊÍÆ÷¶¼ÊÇÒ»¸ö³ÌÐò¡£Òò´Ë£¬Ô´´úÂëÒ²¿ÉÒÔÖ±½Ó½»¸øÕâ¸ö±àÒëÆ÷£¯½âÊÍÆ÷À´Ö´ÐС£
ʹÓÃPython±àд³ÌÐò£¬Äã²»ÐèÒªÔ¤ÏÈÉùÃ÷ºÃ±äÁ¿µÄÀàÐÍ£¬ÒòΪPythonÖбäÁ¿µÄÀ ......
PythonµÄASCII, GB2312, Unicode , UTF-8
ASCII ÊÇÒ»ÖÖ×Ö·û¼¯,°üÀ¨´óСдµÄÓ¢ÎÄ×Öĸ¡¢Êý×Ö¡¢¿ØÖÆ×Ö·ûµÈ£¬ËüÓÃÒ»¸ö×Ö½Ú±íʾ£¬·¶Î§ÊÇ 0-127 Unicode·ÖΪUTF-8ºÍUTF-16¡£
UTF-8±ä³¤¶ÈµÄ£¬×î¶à 6 ¸ö×Ö½Ú£¬Ð¡ÓÚ 127 µÄ×Ö·ûÓÃÒ»¸ö×Ö½Ú±íʾ£¬Óë ASCII ×Ö·û¼¯µÄ½á¹ûÒ»Ñù£¬ASCII ±àÂëϵÄÓ¢ÓïÎı¾²»ÐèÒªÐ޸ľͿÉÒÔµ±×÷ UTF-8 ±àÂë ......
c´úÂë:
int x = a>b?6,6;
ÕâÖÖÓï¾äPythonÖÐÒ²ÓУº
¿ÉÒÔͨ¹ýand or×éºÏÀ´ÊµÏÖ¡£¸öÈËÈÏΪÕâÖÖÓï¾ä¾¡Á¿ÉÙµãºÃ¡£
python°ÑÕâÀàÐ͵ŦÄÜ·¢Ñï¹âÁË´ó¡£µ«ÊÇÓÉÓÚÕâÖÖ×éºÏ±È½ÏÈÆ£¬ËùÒÔÓÐʱºò±È½Ï¾À½á:
±ÈÈç:
5 or 6 and 6 ·µ»Øwhat?
0 or 5 ·µ»Øwhat?
8 and 7 ·µ»Øwhat?
ÓÚÊÇÕûÀíÁËÏ£º
1.pyhon ÖÐÓ ......