[PYTHON] Get out of multiple loops at once

Python doesn't provide an easy way to get out of multiple loops. You can prepare a flag, but it's not very beautiful

python

flag = False
for i in range(100):
    for j in range(100):
        if i > j > 70:
            flag = True
            break
        print i, j
    if flag:
        break

I think that such a for loop can be reviewed from the structure. There are times when I want you to break out of multiple loops. In such a case

• Use the for-else clause
• Use try-except syntax
• Use goto module There seems to be something like that.

Use the for-else clause

python

for i in range(100):
    for j in range(100):
        if i > j > 70:
            break
        print i, j
    else:
        continue
    break

Not so beautiful

Use try-except syntax

python

try:
    for i in range(100):
        for j in range(100):
            if i > j > 70:
                raise Exception
            print i, j
except Exception:
    pass

It's different from the original usage and I can't really like it ~

use goto

goto for Python

python

from goto import goto, label

for i in range(100):
    for j in range(100):
        if i > j > 70:
            goto .END
        print i, j
label .END

Easy to understand but requires installation of external modules

All of them are not good enough, and they should be made into functions. Yes.