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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.

Python String Exercises: Get a string from a given string where all occurrences of its first char have been changed to '$', except the first char itself

Sample Solution:-

Python Code:

def change_char(str1):
  char = str1[0]
  str1 = str1.replace(char, '$')
  str1 = char + str1[1:]

  return str1

print(change_char('restart'))

Sample Output: 

resta$t

Flowchart:

Flowchart: 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

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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)

Output:

[1, 2, 3, [4, 5]]

extend: Extends list by appending elements from the iterable.

x = [1, 2, 3]
x.extend([4, 5])
print (x)

Output:

[1, 2, 3, 4, 5]

Ref: https://bit.ly/2AZ6ZFq