Python: Get a string from a given string where all occurrences of its first char have been changed to '$', except the first char itself
Python String: Exercise-4 with Solution
Write a Python program to get a string from a given string where all occurrences of its first char have been changed to '$', except the first char itself.
def change_char(str1): char = str1 str1 = str1.replace(char, '$') str1 = char + str1[1:] return str1 print(change_char('restart'))
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Previous: Write a Python program to get a string made of the first 2 and the last 2 chars from a given a string. If the string length is less than 2, return instead of the empty string.
Next: Write a Python program to get a single string from two given strings, separated by a space and swap the first two characters of each string.
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Python: Tips of the Day
What is the difference between Python's list methods append and extend?
append: Appends object at the end.
x = [1, 2, 3] x.append([4, 5]) print (x)
[1, 2, 3, [4, 5]]
extend: Extends list by appending elements from the iterable.
x = [1, 2, 3] x.extend([4, 5]) print (x)
[1, 2, 3, 4, 5]
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