Python variable scope inside an if statement.
if True: var = “something” print(var)
This runs just fine. No need to declare outside of if block. Complete opposite of the verbosity of Java.
But var doesn't exist on line 3!! I know different rules for different languages, but allowing this would drive me crazy (esp. if you are just saving an explicit var = null statement)
var
var = null
Then you'll love this:
with open('foo.txt', 'w') as f: f.write('hello world\n') f.write('also hello world\n') # f is closed by still in scope!
Thing is, with dynamic languages this doesn't really matter - it's not like if it had stricter scoping rules it'd fail to compile...
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Python variable scope inside an if statement.
This runs just fine. No need to declare outside of if block. Complete opposite of the verbosity of Java.
But
vardoesn't exist on line 3!! I know different rules for different languages, but allowing this would drive me crazy (esp. if you are just saving an explicitvar = nullstatement)Then you'll love this:
Thing is, with dynamic languages this doesn't really matter - it's not like if it had stricter scoping rules it'd fail to compile...