import stringmystring= 'its master will touch its tail.'myindex = 0print mystring[3:7]+';'print len(mystring)print mystring.lower()print mystring.upper()print mystring.swapcase()print mystring.capitalize()print string.capwords(mystring)print mystring.title()# upper the first char in each wordwidth = 40fillchar = '#'print mystring.ljust(width,fillchar)print mystring.rjust(width,fillchar)print mystring.center(width,fillchar)print mystring.zfill(width)start = 0end = 32substr = 'its'# mystring.find(substr,[start,[end]])print mystring.find(substr,start,end)# search forward,return the index of the first char of the first substr,searched in mystring[start:end]# mystring.index(substr, [start, [end]])print mystring.index(substr,start,end)# similar to s.find(), if there is no such substr, return an error# mystring.rfind(substr, [start, [end]])print mystring.rfind(substr,start,end)# search backward,return the index of the first char of the first substr,searched in mystring[start:end]# mystring.rindex(substr, [start, [end]]))print mystring.rindex(substr,start,end)# similar to s.rfind(), if there is no such substr, return an error# mystring.count(substr, [start, [end]]))print mystring.count(substr,start,end)# caculate the times substr appears in mystring[start:end]mystring[start:end]oldstr = 'its'newstr = 'his'count = 1# mystring.replace(oldstr, newstr, [count])print mystring.replace(substr,newstr,count)# replace the oldstr with newstr, 'count' timesmystring = ' hello\t\n'# mystring.strip([chars])# if chars == null, delete '\n','\r','\t',' '# else, delete each char in charsprint mystring.strip()print mystring.lstrip()mystring = '212341212hello12'print mystring.strip('1234')print mystring.lstrip()tabsize = 2print mystring.replace(' ','\t').expandtabs(1)mystring = 'what|can|i|do|for|you.'sep = '|'maxsplit = 3# mystring.split([sep,[maxsplit]])mylist = mystring.split(sep,maxsplit)print mylistmylist = mystring.rsplit(sep,maxsplit)print mylistmystring = 'hello\ncan you help me\nyes.'# mystring.splitlines([keepends])print mystring.splitlines(0)print mystring.splitlines(1)mysplit = '|'seq = 'abcd ef'# mystring.join(seq)print mysplit.join(seq)myfrom = 'abcde'myto = '12345'table = string.maketrans(myfrom,myto)mystring = 'aabbabcde'# mystring.translate(table[,deletechars])print mystring.translate(table,'d')# about codecs modules# encode([encoding,[errors]])# 'encoding' can be 'gb2312','gbk','gb18030','bz2','zlib','big5','bzse64',etc# 'errors' default be 'strict', meaning 'UnicodeError', it can be 'ignore','replace','xmlcharrefreplace','backslashreplace' as a optionmystring = 'what can i do for you'print mystring.encode('gbk')# decode([decoding,[errors]])print mystring.decode('utf-8')mystring = 'hello, this is Mr.Ding'print mystring.startswith('hello')print mystring.endswith('ding')mystring = 'hehe111'print mystring.isalnum()# if the string consists of only chars and numbersprint mystring.isalpha()print mystring.isdigit()print mystring.isspace()# if, only spaceprint mystring.islower()# if, without upper charprint mystring.isupper()mystring = 'Hello And You'print mystring.istitle()mystring = '1234'# string.atoi(s[,base])# base default 10print string.atoi(mystring,10)+1print string.atol(mystring,10)+1mystring = '123.01111'print string.atof(mystring)+0.01
0 0
