Given a string containing numbers, replace each number by K.
Input : test_str = ‘G4G is 4 all No. 1 Geeks’, K = ‘#’
Output : G#G is # all No. # Geeks
Explanation : All numbers replaced by K.Input : test_str = ‘G4G is 4 all No. Geeks’, K = ‘#’
Output : G#G is # all No. Geeks
Explanation : All numbers replaced by K.
Method #1 : Using replace() + isdigit()
In this, we check for numerics using isdigit() and replace() is used to perform the task of replacing the numbers by K.
Python3
# Python3 code to demonstrate working of # Replace numbers by K in String # Using replace() + isdigit() # initializing string test_str = 'G4G is 4 all No. 1 Geeks' # printing original string print("The original string is : " + str(test_str)) # initializing K K = '@' # loop for all characters for ele in test_str: if ele.isdigit(): test_str = test_str.replace(ele, K) # printing result print("The resultant string : " + str(test_str)) |
The original string is : G4G is 4 all No. 1 Geeks The resultant string : G@G is @ all No. @ Geeks
Method #2 : Using regex() + sub()
In this, appropriate regex is used to identify digits and sub() is used to perform replace.
Python3
# Python3 code to demonstrate working of # Replace numbers by K in String # Using regex() + sub() import re # initializing string test_str = 'G4G is 4 all No. 1 Geeks' # printing original string print("The original string is : " + str(test_str)) # initializing K K = '@' # using regex expression to solve problem res = re.sub(r'\d', K, test_str) # printing result print("The resultant string : " + str(res)) |
The original string is : G4G is 4 all No. 1 Geeks The resultant string : G@G is @ all No. @ Geeks
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