global statement detected PYL-W0603
Anti-pattern
Major
4 years ago
—
4 years old
Using the global statement
25
26
27def collect_processes():
28 global processes29 results = [(proc, maybe_wait(proc)) for proc in processes]
30 processes = [proc for proc, status in results if status is True]
31 for proc, status in results:
Description
It is recommended not to use global statement unless it is really necessary. Global variables are dangerous because they can be simultaneously accessed from multiple sections of a program. This frequently results in bugs. This also make code difficult to read, because they force you to search through multiple functions or even modules just to understand all the different locations where the global variable is used and modified. Read more about why it should be avoided here.