Tve 3

• Arithmetic Operators


  Operations that can be performed on numbers
• Subtraction


  Operation where one number is taken away from another
• Subtraction


  • 10 - 5 = 3
• Addition


  • 5 + 3
• Multiplication


  • 5 * 3
• Division


  Operation where one number is divided by another
• Division


  • 5 / 3
• Modulus


  Operation that returns the remainder of a division
• Modulus


  • 5 % 3 = 2
• Floor Division


  Operation that returns the integer part of a division
• Floor Division


  • 5 // 3 = 1
• Exponent


  Operation that raises a number to a power
• Exponent


  • 5 ** 3 = 125
• PEMDAS rule: Parentheses, Exponents, Multiplication/Division, Addition/Subtraction
• Whitespace in between operators and values doesn't matter for Python
• Input statement


  Allows a user to input data in the console and stores it in a variable
• Input statement syntax: variable = input() or variable = input("prompt")
• Input statement stores input as a string by default
• len() function


  Counts the number of characters including whitespaces in a sentence, phrase or word
• len() function


  • len('hello') returns 5
  • len('I look good today.') returns 18
• str(), int(), float() functions


  Used to convert variables/constants to a desired data type (casting)
• Strings and integers/floats cannot be concatenated together without using str(), int() or float()