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python2.7 编码 #-- coding: xxx -- #-- coding:UTF-8 --# -- coding:iso-8859-15 -- a=u"€" print ord(a)
路径的写法 print 'C:\a\b' 结果C:
print r'C:\a\b' 结果c:\a\b
print """aaa bbb""" 结果: aaa bbb
'aaa'+'bbb' 结果:'aaabbb'
'aa''bb' 'aabb'
num ='abcde' num[2] 'c' num[-1] 'e'