Remove white spaces

remove_spaces.py

# courtesy: http://stackoverflow.com/questions/8270092/python-remove-all-whitespace-in-a-string
# remove leading spaces
sentence = ' hello  apple'
sentence.strip()
# >>> 'hello  apple'

# remove all spaces
sentence = ' hello  apple'
sentence.replace(" ", "")
# >>> 'helloapple'

# Remove duplicate spaces between words
sentence = ' hello  apple'
" ".join(sentence.split())
# >>> 'hello apple'