Python 101 · Membership, Logic, Walrus, Identity, Comparison Operators

Jan 23, 2016 | Tech Software
Index
Index

Membership

  • Checks if an element is in a container; in, not in.

Logic

  • Connects multiple Boolean conditions and evaluate the overall outcome; and, or, not.

Logic Extended

  • Performs 'bulk' logical checks, simplifying long logic sequences; any(), all().

Walrus

  • Assigns a value within an expression and returns it for immediate use; (var := expr).

Identity

  • Checks if two variables point to the same object in memory, not their values; is, is not.

Comparison

  • Basics

Operator Description Example Result
== Equal 5 == 5.0 True
!= Not equal 10 != 7 True
> Greater than 5 > 10 False
< Less than "apple" < "banana" True
>= Greater than or equal 5 >= 5 True
<= Less than or equal 3 <= 2 False
Note: str comparison is based on Unicode encoding; == compares values, is compares memory addresses.

  • Strings

  • Chained

  • Different types

  • Sequences