Python string manipulation (string substitution, delete, intercept, copy, join, compare, find, include, Case transform

Go to spaces and special symbols

S.strip (). Lstrip (). Rstrip (', ')

Copy string

#strcpy (sstr1,sstr2) sStr1 = ' strcpy ' sStr2 = sstr1sstr1 = ' strcpy2 ' Print sStr2

Connection string

#strcat (sstr1,sstr2) sStr1 = ' strcat ' sStr2 = ' append ' sStr1 + = Sstr2print sStr1

Find characters

#strchr (SSTR1,SSTR2) # < 0 for not found sStr1 = ' strchr ' sStr2 = ' s ' nPos = Sstr1.index (sStr2) Print NPos

Comparing strings

#strcmp (sstr1,sstr2) sStr1 = ' strchr ' sStr2 = ' strch ' Print cmp (SSTR1,SSTR2)

Scans whether a string contains the specified character

#strspn (sstr1,sstr2) sStr1 = ' 12345678 ' sStr2 = ' 456 ' #sStr1 and chars both in SStr1 and Sstr2print Len (SSTR1 and SSTR2)

String length

#strlen (sStr1) sStr1 = ' strlen ' Print len (SSTR1)

Converts the case in a string

#strlwr (sStr1) sStr1 = ' jcstrlwr ' sStr1 = Sstr1.upper () #sStr1 = Sstr1.lower () print sStr1

Appends a string of the specified length

#strncat (sstr1,sstr2,n) sStr1 = ' 12345 ' sStr2 = ' abcdef ' n = 3sstr1 + = Sstr2[0:n]print sStr1

String specifying length Comparison

#strncmp (sstr1,sstr2,n) sStr1 = ' 12345 ' sStr2 = ' 123BC ' n = 3print cmp (sstr1[0:n],sstr2[0:n])

Copy characters of specified length

#strncpy (sstr1,sstr2,n) sStr1 = ' sStr2 = ' 12345 ' n = 3sstr1 = Sstr2[0:n]print sStr1

Replaces the first n characters of a string with the specified character

#strnset (sstr1,ch,n) sStr1 = ' 12345 ' ch = ' r ' n = 3SSTR1 = n * ch + sstr1[3:]print SSTR1

Scan string

#strpbrk (sstr1,sstr2) sStr1 = ' Cekjgdklab ' sStr2 = ' gka ' NPos = -1for C in sstr1:if c in sstr2:npos = Sstr1.index (c) Breakprint NPos

Flip string

#strrev (sStr1) sStr1 = ' ABCDEFG ' sStr1 = Sstr1[::-1]print sStr1

Find string

#strstr (sstr1,sstr2) sStr1 = ' ABCDEFG ' sStr2 = ' cde ' Print sstr1.find (SSTR2)

Split string

#strtok (sstr1,sstr2) sStr1 = ' Ab,cde,fgh,ijk ' sStr2 = ', ' sStr1 = Sstr1[sstr1.find (sStr2) + 1:]print sstr1# or s = ' ab,cde,fgh , Ijk ' Print (S.split (', '))

Connection string

delimiter = ', ' mylist = [' Brazil ', ' Russia ', ' India ', ' China ']print delimiter.join (mylist)

Implementation of Addslashes in PHP

def addslashes (s): D = {' ' ': ' \ \ ' ', ' ' ': ' \ \ ', '/': ' \\\0 ', ' \ \ ': ' \\\\ '} return '. Join (D.get (c, c) for C in s) s = " John ' Johny ' Doe (a.k.a. \ "Super joe\") \\\0 "Print sprint addslashes (s)

Show only letters and numbers

def onlycharnum (s,oth= "): S2 = S.lower ();     Fomart = ' abcdefghijklmnopqrstuvwxyz0123456789 ' for C in S2:if not C in fomart:s = S.replace (c, ' '); return s; Print (Onlystr ("a000 aa-b"))

Intercept string

str = ' 0123456789′print Str[0:3] #截取第一位到第三位的字符print str[:] #截取字符串的全部字符print str[6:] #截取第七个字符到结尾print str[:-3] # Intercept from the beginning to the third character before print str[2] #截取第三个字符print str[-1] #截取倒数第一个字符print str[::-1] #创造一个与原字符串顺序相反的字符串print str[-3:-1] # Intercept the characters before the third and last digit print str[-3:] #截取倒数第三位到结尾print str[:-5:-3] #逆序截取, what do you mean?

Python string manipulation (string substitution, delete, intercept, copy, join, compare, find, include, Case transform