Tags

  • AWS (7)
  • Apigee (3)
  • ArchLinux (5)
  • Array (6)
  • Backtracking (6)
  • BinarySearch (6)
  • C++ (19)
  • CI&CD (3)
  • Calculus (2)
  • DesignPattern (43)
  • DisasterRecovery (1)
  • Docker (8)
  • DynamicProgramming (20)
  • FileSystem (11)
  • Frontend (2)
  • FunctionalProgramming (1)
  • GCP (1)
  • Gentoo (6)
  • Git (15)
  • Golang (1)
  • Graph (10)
  • GraphQL (1)
  • Hardware (1)
  • Hash (1)
  • Kafka (1)
  • LinkedList (13)
  • Linux (27)
  • Lodash (2)
  • MacOS (3)
  • Makefile (1)
  • Map (5)
  • MathHistory (1)
  • MySQL (21)
  • Neovim (10)
  • Network (66)
  • Nginx (6)
  • Node.js (33)
  • OpenGL (6)
  • PriorityQueue (1)
  • ProgrammingLanguage (9)
  • Python (10)
  • RealAnalysis (20)
  • Recursion (3)
  • Redis (1)
  • RegularExpression (1)
  • Ruby (19)
  • SQLite (1)
  • Sentry (3)
  • Set (4)
  • Shell (3)
  • SoftwareEngineering (12)
  • Sorting (2)
  • Stack (4)
  • String (2)
  • SystemDesign (13)
  • Terraform (2)
  • Tree (24)
  • Trie (2)
  • TwoPointers (16)
  • TypeScript (3)
  • Ubuntu (4)
  • Home

    Python Scopes and Namespaces Example

    Published Sep 12, 2022 [  Python  ]

    def scope_test():
        def do_local():
            spam = "local spam"
    
        def do_nonlocal():
            nonlocal spam
            spam = "nonlocal spam"
    
        def do_global():
            global spam
            spam = "global spam"
    
        spam = "test spam"
        do_local()
        print("After local assignment:", spam)
        do_nonlocal()
        print("After nonlocal assignment:", spam)
        do_global()
        print("After global assignment:", spam)
    
    scope_test()
    print("In global scope:", spam)
    

    Output

    After local assignment: test spam
    After nonlocal assignment: nonlocal spam
    After global assignment: nonlocal spam
    In global scope: global spam
    

    Note how the local assignment (which is default) didn’t change scope_test’s binding of spam. The nonlocal assignment changed scope_test’s binding of spam, and the global assignment changed the module-level binding.

    Reference