﻿ Python: Get a string from a given string where all occurrences of its first char have been changed to '\$', except the first char itself - w3resource # 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. Sample Solution:-

Python Code:

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

return str1

print(change_char('restart'))
```
```

Sample Output:

```resta\$t
```

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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