[issue6766] Cannot modify dictionaries inside dictionaries using Managers from multiprocessing

[Snidhi Sofpro]

Snidhi Sofpro <Snidhi.Sofpro at gmail.com> added the comment:

Hi team,

Looks like this issue remains per code below:

import multiprocessing, sys, time, traceback;

if __name__ == '__main__':

    print(sys.version);

    mpd = multiprocessing.Manager().dict();
    mpd['prcss'] = {'q' : 'queue_1', 'ctlg' : 'ctlg_1' };

    # update 1 - doesn't work!
    mpd['prcss'].update( { 'name': 'concfun_1'} );
    print('Result of failed update 1:', mpd['prcss']);

    # update 2 - doesn't work!
    mpd['prcss']['name'] = 'concfun_1';
    print('Result of failed update 2:', mpd['prcss']);

    # update 3 - works!
    mpd_prcss = mpd['prcss'];
    mpd_prcss['name'] = 'concfun_1';
    mpd['prcss'] = mpd_prcss;
    print('Result of successful update 3:', mpd['prcss']);

### --- output ###
3.6.1 (v3.6.1:69c0db5, Mar 21 2017, 17:54:52) [MSC v.1900 32 bit (Intel)]
Result of failed update 1: {'q': 'queue_1', 'ctlg': 'ctlg_1'}
Result of failed update 2: {'q': 'queue_1', 'ctlg': 'ctlg_1'}
Result of successful update 3: {'q': 'queue_1', 'ctlg': 'ctlg_1', 'name': 'concfun_1'}

----------
nosy: +Snidhi
versions:  -Python 2.7, Python 3.4, Python 3.5

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue6766>
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