We will use replace method.
for example our string is “ABC”
We want to replace the C with D
x=”ABC”
x.replace(the character we want to replace, the character we want to place in the replacement)
so it will be x.replace(“C”, “D”)
The code
x="ABC"
x=x.replace("C","D")
print(x)
More string methods
x="Hello"
x=x.lower()
print(x) #hello
x=x.upper()
print(x) #HELLO
a = x.count('L')
print(a) #2
b=x.index('O')
print(b) #4
x=x.replace('L','l')
print(x) #HEllO
#string is immutable.
x=x[:]+" world"
print(x) #HEllO world
a=len(x)
print(a) #4