[Python Study Notes] string manipulation

                     string Manipulation                                                                   

A. String formatted output

1 " Liu " 2 Print "  " % name3   4# output: I am Liu   6 PS: string is%s; integer%d; floating-point number%f

B. Finding a string (find)

1 # detects if STR is included in MyStr, or returns 1 if the index value is returned .

1 ' Xinge is so handsome. ' 2   3 >>> str.find ('xing')40 5   6 >>> str.find (' good ')7 6

C. Finding the contents of a replacement string (replace)

1 mystr.replace (str1, str2, Mystr.count (str1)) # replace mystr in str1 with str2 , if Count is specified, replace no more than count Times.

1 ' ABCABCABC ' 2   3 >>> str.replace ('a','xinge' , 2)4'xingebcxingebcabc'

d. Slicing with Str (split)

Mystr.split (str=""#  with Str as the delimiter slice mystr, if the maxsplit has a specified value, only the Maxsplit substring is delimited

1>>> str ='A\NB\TC'2  3>>>Str4 'A\NB\TC'5  6>>> Str.Split()7['a','b','C']

F. Capitalize the first letter of the string (capitalize)

1 >>> str='abc'2   3 >>>  Str.capitalize ()4'Abc'

G. Capitalize the first letter of each word of a string (title)

1 " Hello World " 2   3 >>> str.title ()4'HelloWorld'

H.startswith,endswith

1 startswith #  checks if the string starts with STR, returns TRUE, otherwise False2 endswith # checks whether the string ends with STR, or returns False if True.

I.upper,lower

1 Upper #  convert all characters in mystr to uppercase 2 Lower #  convert all characters in mystr to lowercase

J.strip,lstrip,rstrip

1 Strip #  clears the left and right spaces 2 lstrip #  clears the left space 3 Rstrip #  Clear the right space

K.join

1 mystr.join (str) #  mystr Insert Str After each character, constructing a new string

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[Python Study Notes] string manipulation