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Python: Convert camel case string to snake case string

Python Regular Expression: Exercise-36 with Solution

Write a python program to convert camel case string to snake case string.

Sample Solution:-

Python Code:

def camel_to_snake(text):
        import re
        str1 = re.sub('(.)([A-Z][a-z]+)', r'\1_\2', text)
        return re.sub('([a-z0-9])([A-Z])', r'\1_\2', str1).lower()

print(camel_to_snake('PythonExercises'))

Sample Output:

python_exercises                                                                                              

Pictorial Presentation:

Python: Regular Expression - Convert camel case string to snake case string.

Flowchart:

Flowchart: Regular Expression - Convert camel case string to snake case string.

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Python: Tips of the Day

Creates a dictionary with the same keys as the provided dictionary and values generated by running the provided function for each value

Example:

def tips_map_values(obj, fn):
  ret = {}
  for key in obj.keys():
    ret[key] = fn(obj[key])
  return ret
users = {
  'Owen': { 'user': 'Owen', 'age': 29 },
  'Eddie': { 'user': 'Eddie', 'age': 15 }
}

print(tips_map_values(users, lambda u : u['age'])) # {'Owen': 29, 'Eddie': 15}

Output:

{'Owen': 29, 'Eddie': 15}