On 8/9/20 12:51 AM, Gabor Urban wrote: > Hi guys, > > I have a quite simple question but I could not find the correct answer. > > I have twoo modules A and B. A imports B. If I import A in a script, Will > be B imported automatically? I guess not, but fő not know exactly. > > Thanks for your answer ín advance,
Think of import as meaning "make available in namespace". If A simply imports B, then B is available in A's namespace as a name for module B's namespace, and you can access things inside B by qualifying the names: if Foo is in B, then B.Foo works, Foo does not. Different forms of the import statement change the way symbols are made available, e.g you can do from B import * # all the symbols from B are in A's global namespace, Foo works now import B as Baz # B is available through the name Baz, so use Baz.Foo etc. If you have a separate program, call it C, and it imports A, then A is available in C as a name for module A's namespace. That said nothing about B, so the symbol B is not available in C. But if C calls something in A that uses B, then that will work fine, because B exists in A's namespace. And you can access symbols from B by properly qualifying: A.B.Foo. Which is it you meant by "imported automatically"? See Byung-Hee's example to see this in action without all these messy words :) -- https://mail.python.org/mailman/listinfo/python-list
