Mailman 3 Example doesn't work - docs

7 May 2020


      I'm learning on Python 3.8 (32-bit) on a Windows-10 machine.
In Section 4.2. for Statements, the second example "Iterate over a copy"
fails in practice.
...
...
...
for user, status in users.copy().items():
...     if status == 'inactive':
...             del users[user]
...
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
NameError: name 'users' is not defined
...
...
...
...
...
...
active_users = {}
...
...
...
for user, status in users.items():
...     if status == 'active':
...             active_users[user] = status
...
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
NameError: name 'users' is not defined
...
...
...