5. Variable names

• In Python, variable names must start with a letter or underscore _

• Accents are allowed!

• Examples of valid names: price, action, salary, _x, year_2011, average_salary

    >>> a = 2     >>> price = 500     >>> print(a)     2     >>> print(price)     500

• Examples of invalid names: average salary, 3x, 1st, @, $

    >>> 3x = “text”       File “<stdin>”, line 1         3x = “text”         ^     SyntaxError: invalid syntax

Define valid and invalid variables below

   .. raw:: html       :file: ../_static/interpreter.html

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