Python: Convert snake case string to camel case string
Python Regular Expression: Exercise-37 with Solution
Write a python program to convert snake case string to camel case string.
From Wikipedia,
Camel case:
Camel case (sometimes stylized as camelCase or CamelCase, also known as camel caps or more formally
as medial capitals) is the practice of writing phrases without spaces or punctuation, indicating
the separation of words with a single capitalized letter, and the first word starting with either
case. Common examples include "iPhone" and "eBay". It is also sometimes used in online usernames
such as "johnSmith", and to make multi-word domain names more legible, for example in promoting
"EasyWidgetCompany.com".
Snake case: Snake case (stylized as snake_case) refers to the style of writing in which each space is replaced by an underscore (_) character, and the first letter of each word written in lowercase. It is a commonly used naming convention in computing, for example for variable and subroutine names, and for filenames. One study has found that readers can recognize snake case values more quickly than camel case (but note that, "(...) subjects were trained mainly in the underscore style (...)", so the results may be biased).
Sample Solution:
Python Code:
def snake_to_camel(word):
import re
return ''.join(x.capitalize() or '_' for x in word.split('_'))
print(snake_to_camel('python_exercises'))
Sample Output:
PythonExercises
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Python: Tips of the Day
Find current directory and file's directory:
To get the full path to the directory a Python file is contained in, write this in that file:
import os dir_path = os.path.dirname(os.path.realpath(__file__))
(Note that the incantation above won't work if you've already used os.chdir() to change your current working directory, since the value of the __file__ constant is relative to the current working directory and is not changed by an os.chdir() call.)
To get the current working directory use
import os cwd = os.getcwd()
Documentation references for the modules, constants and functions used above:
- The os and os.path modules.
- The __file__ constant
- os.path.realpath(path) (returns "the canonical path of the specified filename, eliminating any symbolic links encountered in the path")
- os.path.dirname(path) (returns "the directory name of pathname path")
- os.getcwd() (returns "a string representing the current working directory")
- os.chdir(path) ("change the current working directory to path")
Ref: https://bit.ly/3fy0R6m
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