string = 'proton neutron'
string.capitalize() # Proton neutron
string.title() # Proton Neutron
string.upper() # PROTON NEUTRON
string.lower() # proton neutron
string.center(20, '.') # ...proton neutron...
# conditionals
string.isdigit() # False
string.islower() # True
string.isupper() # False
# counting and finding letters in text
string.count('p', 0, len(string)) # 1
string.find('t', 1, len(string)) # 3
# removing whitespace from a string
string = ' some text '
string.lstrip() # 'some text '
string.rstrip() # ' some text'
string.strip() # 'some text'
'''
Michael Sjoeberg
2018-11-05
https://github.com/michaelsjoeberg/python-playground/blob/master/basics/string-operations.py
'''