Python Variables - W3Schools
www.w3schools.com › python › python_variablesPython has no command for declaring a variable. A variable is created the moment you first assign a value to it. Example x = 5 y = "John" print(x) print(y) Try it Yourself » Variables do not need to be declared with any particular type, and can even change type after they have been set. Example x = 4 # x is of type int
Variables in Python – Real Python
realpython.com › python-variablesOfficially, variable names in Python can be any length and can consist of uppercase and lowercase letters ( A-Z, a-z ), digits ( 0-9 ), and the underscore character ( _ ). An additional restriction is that, although a variable name can contain digits, the first character of a variable name cannot be a digit.