zmienna globalna

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#28519

From: ltklos
Date: Thu, 04 Sep 2014 05:49

64 lines
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Witam, zaczynam dopiero z Pythonem i mam problem ze zmienną globalną.

mam dwa pliki z kodem: 
moduly1.py ktory zawiera jedna definicje funkcji:

def f (a,b):
    import test_global
    if a == b:
        test_global.x = 0
    elif a < b:
        test_global.x = -1
    else:
        test_global.x = 1

    print ".x = %d" % (test_global.x)

    return a + b

i global_test.py:

from moduly1 import f
x = 10
print "1. x = %d" % (x)
print "suma: %d" % (f (1,2))
print "2. x = %d" % (x)
print "suma: %d" % (f (2,2))
print "3. x = %d" % (x)
print "suma: %d" % (f (3,2))
print "4. x = %d" % (x)

może ktoś mi wyjaśnić dlaczego w wyniku odpalenia global_test.py zamiast otrzymać:
1. x = 10
.x = -1
suma: 3
2. x = -1
.x = 0
suma: 4
3. x = 0
.x = 1
suma: 5
4. x = 1

dostaję taki wynik:

1. x = 10
1. x = 10
.x = -1
suma: 3
2. x = -1
.x = 0
suma: 4
3. x = 0
.x = 1
suma: 5
4. x = 1
.x = -1
suma: 3
2. x = 10
.x = 0
suma: 4
3. x = 10
.x = 1
suma: 5
4. x = 10

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