mypy gives 'not defined' error for use after global declaration

[onlined]

In version 0.630 and master (with Python 3.7.0), I get this error :

def foo() -> None:
    global myglobal
    myglobal = 2  # error: Name 'myglobal' is not defined

I thought that I should not get an error. Is this behavior correct?

[JukkaL]

Mypy doesn't behave correctly, but it may be somewhat difficult to fix in mypy. As a workaround, you can declare the global at module top level:

myglobal: int

def foo() -> None:
    global myglobal
    myglobal = 2  # OK

[raffaem]

Mypy doesn't behave correctly, but it may be somewhat difficult to fix in mypy. As a workaround, you can declare the global at module top level:

myglobal: int

def foo() -> None:
    global myglobal
    myglobal = 2  # OK

Looks like you don't need global myglobal with this.