Bugs item #1229264, was opened at 2005-06-28 21:47
Message generated for change (Comment added) made by birkenfeld
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Category: None
Group: Python 2.3
>Status: Closed
>Resolution: Invalid
Priority: 5
Submitted By: ST2015 (st2015)
Assigned to: Nobody/Anonymous (nobody)
Summary: error whit dict working whith class
Initial Comment:
se follow code:
"""
class my_class:
a={}
def __init__(self, n):
self.a = n
def hola(self, b):
self.a["a"] = b
a1 = my_class({"a":1, "b":1})
print "a1=", a1.a
a2 = my_class({"a":1, "b":1})
a1.hola(2)
print "a2=", a2.a
print "a1=", a1.a
"""
must show:
a1= {'a': 1, 'b': 1}
a2= {'a': 1, 'b': 1}
a1= {'a': 2, 'b': 1}
but show:
a1= {'a': 1, 'b': 1}
a2= {'a': 2, 'b': 1}
a1= {'a': 2, 'b': 1}
This error happend only whit dicts, y only when de dict
atributte is defined before of the __init__ of the class
----------------------------------------------------------------------
>Comment By: Reinhold Birkenfeld (birkenfeld)
Date: 2005-06-28 22:01
Message:
Logged In: YES
user_id=1188172
Then this is no bug.
You are never assigning to self.a, thus the "a" you
reference in the class's methods is the one defined as a
class attribute and therefore shared between instances.
----------------------------------------------------------------------
Comment By: ST2015 (st2015)
Date: 2005-06-28 21:54
Message:
Logged In: YES
user_id=1304338
sorry the code is the folowing:
class my_class:
a={}
def __init__(self, n):
for i in n:
self.a[i] = n[i]
def hola(self, b):
self.a["a"] = b
a1 = my_class({"a":1, "b":1})
print "a1=", a1.a
a2 = my_class({"a":1, "b":1})
a1.hola(2)
print "a2=", a2.a
print "a1=", a1.a
----------------------------------------------------------------------
Comment By: ST2015 (st2015)
Date: 2005-06-28 21:54
Message:
Logged In: YES
user_id=1304338
sorry the code is the folowing:
class my_class:
a={}
def __init__(self, n):
for i in n:
self.a[i] = n[i]
def hola(self, b):
self.a["a"] = b
a1 = my_class({"a":1, "b":1})
print "a1=", a1.a
a2 = my_class({"a":1, "b":1})
a1.hola(2)
print "a2=", a2.a
print "a1=", a1.a
----------------------------------------------------------------------
You can respond by visiting:
https://sourceforge.net/tracker/?func=detail&atid=105470&aid=1229264&group_id=5470
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