On Sat, Jul 28, 2001 at 09:54:21AM -0400, Guido van Rossum wrote:
Worse, according to the Reference Manual,
The "from" form with "*" may only occur in a module scope.
I don't know when that snuck in, but it's not enforced. If we're serious, we should at least add a warning!
Eh, last I looked, you and Jeremy were most serious about this :) It came up during the nested-scopes change in 2.1, where it was first made illegal, and later just illegal in the presence of a nested scope: (without future statement)
def spam(x): ... from stat import * ... def eggs(): ... print x ... <stdin>:1: SyntaxWarning: local name 'x' in 'spam' shadows use of 'x' as global in nested scope 'eggs' <stdin>:1: SyntaxWarning: import * is not allowed in function 'spam' because it contains a nested function with free variables
(with future statement)
def spam(x): ... from stat import * ... def eggs(): ... print x ... File "<stdin>", line 2 SyntaxError: import * is not allowed in function 'spam' because it contains a nested function with free variables
I'll add a bug report.
Should we warn about exec (without 'in' clause) in functions as well ? (without future statement)
def spam(x,y): ... exec y ... def eggs(): ... print x ... <stdin>:1: SyntaxWarning: local name 'x' in 'spam' shadows use of 'x' as global in nested scope 'eggs' <stdin>:1: SyntaxWarning: unqualified exec is not allowed in function 'spam' it contains a nested function with free variables
(with future statement)
def spam(x,y): ... exec y ... def eggs(): ... print x ... File "<stdin>", line 2 SyntaxError: unqualified exec is not allowed in function 'spam' it contains a nested function with free variables
The warnings *only* occur in the presence of a nested scope, though.
--
Thomas Wouters