How to replace a letter into another in a string using module "string"?

Question

in python2 i can simply type like
import string
s = "aaaaaaa"
string.replace(s, 'a', 'b')
but it can't work in python3. so how can i realize it in python3

Answer 1

s = 'aaaaaaa'
s = s.replace('a', 'b')

or you can define new function and use like in Python2:
s = 'aaaaaaa'
replace = lambda x, y, z: x.replace(y, z)
s = replace(s, 'a', 'b')

or define class string:
class string:
def replace(x, y, z):
return x.replace(y, z)
s = 'aaaaaaa'
s = string.replace(s, 'a', 'b')

but if you needs more powerfull method of replasing, use sub from module re:

from re import sub
s = 'aaaaaaa'
pattern = r"a"
s = s.sub(pattern, 'b')

Answer 2

re on:
<<
i tried it but still doesn't work
...
t.replace('k', 'h')
print(t)
>>
try like this:
t = t.replace('k', 'h')
print(t)

or:
print( t.replace('k', 'h'))

Answer 3

In python 3 you use it like this:
s.replace('a', 'b') or 'aaaaa'.replace('a', 'b')

Answer 4

i tried it but still doesn't work:

import string
t = "kkkkkkkkk"
t.replace('k', 'h')
print (t)

the letters can't be replaced, why?

Answer 5

cool! thx!

Answer 6

well, the method does not replace in place. It returns a new string. Try:
newT = t.replace('k','h')
print(newT)