Convert snake case string to camel case string

Convert snake case string to camel case string.

def snake_to_camel(word):

    import re

    return ''.join(x.capitalize() or '_' for x in word.split('_'))

# test
print(snake_to_camel('python_exercises'))

Output:

PythonExercises

See also

https://www.w3resource.com/python-exercises/re/python-re-exercise-37.php