Comp 1701 Python - Selections and Repetition

All the comparison operators

x != y # x is not equal to y

x > y # x is greater than y

x < y # x is less than y

x >= y # x is greater than or equal to y

x <= y # x is less than or equal to y

What are the Logical Operators? What two are Boolean values?

"and", "or", "not" -> All three operators take Boolean operands and produce Boolean values

Boolean values: “True” and “False” with capitalization mattering

Order of precedence 

Think of bedmas 

1. Brackets () - Highest

2. Functions 

3. Exponents [ ** ]

4. Multiplication/Division/Division Where you round down /Modulo [ * , /, //, % ]

5. Addition/Subtraction [ +, - ]

6. Relational/Operators [ ==, !=, >, <, >=, <= ]

7. Logical “not” [ not ]

8. Logical “and” [ and ]

9. logical “or” [ or ] - Lowest

10. If, else, elif

How to calculate modulo on calculator 

Divide the two numbers 

Subtract the whatever number to answer to get it to 0.decimal 

then multiple by the second number and round 

Example:

1. 263 / 14 = 18.785714

2. We only want 0.785714 so subtract this answer by 18

3. Multiple that answer by the second number (14) → 14 x .785714 = 10.999996 or 11 rounded

Chained conditionals example

if x < y:
  print("x is less than y")
elif x > y:
  print("x is greater than y")
else:
  print("x and y must be equal")

While nested would be:

f x < y:
    print("x is less than y")
else:
    if x > y:
        print("x is greater than y")
    else:
        print("x and y must be equal")

So Chained so no if/else/elif within another if/else/elif. While a nested is the oppositie where there are other

1. ()

2. f(x) - functions

3. *, /, //, % -

4. +, -

5. ><, <=>, =, ==, !=

(Not, and or)

• "if"