New submission from saeed:

Hi,
I define multi List in a line such as this:
    smoke= exercise  = cholesterol = angina = stroke = attack = [0] * 2
and This work bad!
if I define later line such this, problem has been solve:
    smoke=[0]*2
    exercise  = [0]*2
    cholesterol = [0]*2
    angina = [0]*2
    stroke = [0]*2

I just change this line in my project but result changed!

Is this a bug?

*****************************************
*****************************************

notice to "Smoke" change in follow,
"Smoke" changed from [0, 1] to [0 ,6] in a one state, for what??!!

*****************************************
out put before change:

> $ python3.5 ./my.py
smoke=  [0, 0]
                      before income: [0, 0, 0, 0, 0, 0, 0, 0]
income[ 5 ] += 1       after income: [0, 0, 0, 0, 0, 1, 0, 0]
                      before smoke: [0, 0]
2
smoke[ 1 ] += 1       after smoke: [0, 1]
stop in step
                      before income: [0, 0, 0, 0, 0, 1, 0, 0]
income[ 1 ] += 1       after income: [0, 1, 0, 0, 0, 1, 0, 0]
                      before smoke: [0, 6]
2
smoke[ 1 ] += 1       after smoke: [0, 7]
stop in step
                      before income: [0, 1, 0, 0, 0, 1, 0, 0]
income[ 5 ] += 1       after income: [0, 1, 0, 0, 0, 2, 0, 0]
                      before smoke: [2, 10]
1
smoke[ 0 ] += 1       after smoke: [3, 10]
stop in step       

*****************************************

out put after change:
>$ python3.5 my1.py 
smoke=  [0, 0]
                      before income: [0, 0, 0, 0, 0, 0, 0, 0]
income[ 5 ] += 1       after income: [0, 0, 0, 0, 0, 1, 0, 0]
                      before smoke: [0, 0]
2
smoke[ 1 ] += 1       after smoke: [0, 1]
stop in step
                      before income: [0, 0, 0, 0, 0, 1, 0, 0]
income[ 1 ] += 1       after income: [0, 1, 0, 0, 0, 1, 0, 0]
                      before smoke: [0, 1]
2
smoke[ 1 ] += 1       after smoke: [0, 2]
stop in step
                      before income: [0, 1, 0, 0, 0, 1, 0, 0]
income[ 5 ] += 1       after income: [0, 1, 0, 0, 0, 2, 0, 0]
                      before smoke: [0, 2]
1
smoke[ 0 ] += 1       after smoke: [1, 2]
stop in step

*****************************************

:/

Thanks

----------
files: my.tar.7z
messages: 279967
nosy: ezio.melotti, saeed
priority: normal
severity: normal
status: open
title: List define and Change result
type: behavior
versions: Python 3.5
Added file: http://bugs.python.org/file45331/my.tar.7z

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<http://bugs.python.org/issue28594>
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