Check that no untyped functions are called [no-untyped-call]

If you use —disallow-untyped-calls, mypy generates an error when youcall an unannotated function in an annotated function.

Example:

# mypy: disallow-untyped-calls
 
def do_it() -> None:
    # Error: Call to untyped function "bad" in typed context  [no-untyped-call]
    bad()
 
def bad():
    ...