Prog challange ngrams

In the language of your choice list in order of frequency bi-grams and tri-grams posted to /prog/.


a = 3

def foo():
    a = 2

foo()    # foo should set the outer a to 2
print a  # so this should print '2'

This prints 3, because foo() didn't modify the variable in the enclosing scope. foo() can read the value of a from the outer scope; it just can't write to it, unless you use an explicit global declaration inside foo, or you write to the globals dictionary directly, like so:


a = 3

def foo():
    globals()['a'] = 2

foo()    # foo should set the outer a to 2
print a  # so this should print '2'