Python切分字符串

先上代碼再解釋：

#!/usr/bin/python
# -*- coding: UTF-8 -*- 


s = "target_link_libraries(qtinfra_canvas \n   PUBLIC Qt4::QtGui    \nPRIVATE infra common qtinfra_util)"

s1 = s[s.index('(')+1:s.index(')')]	 
s2 = s1.split(" ")
s3 = map(lambda s: s.strip(), s2)
s4 = filter(None, s3) 
print s1
print s2
print s3
print s4


'''Output:
qtinfra_canvas
   PUBLIC Qt4::QtGui
PRIVATE infra common qtinfra_util
['qtinfra_canvas', '\n', '', '', 'PUBLIC', 'Qt4::QtGui', '', '', '', '\nPRIVATE', 'infra', 'c
['qtinfra_canvas', '', '', '', 'PUBLIC', 'Qt4::QtGui', '', '', '', 'PRIVATE', 'infra', 'commo
['qtinfra_canvas', 'PUBLIC', 'Qt4::QtGui', 'PRIVATE', 'infra', 'common', 'qtinfra_util']
'''

去除字符串裏面的\n：str.strip()

去除list裏面的\n（不減少元素數量）：newStr = map(lambda s: s.strip(), oldStr)

去除list裏面爲空的元素：newStr = filter(None, oldStr)

切分字符串（可以結合正則表達式來做：re模塊（需import re）裏面的re.split()）：

用空格：s2 = s1.split(" ")

用逗號：s2 = s1.split(",")