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copying and references #96

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procho opened this issue Nov 2, 2017 · 0 comments
Open

copying and references #96

procho opened this issue Nov 2, 2017 · 0 comments

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@procho
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procho commented Nov 2, 2017

a = b makes a copy if strings
a = b copies the reference if lists

(Pdb) ii = [['1003 GPVR_L0003A_1 GS-MT-01', '3570.688']]
(Pdb) iii = ii[0]
(Pdb) iii
['1003 GPVR_L0003A_1 GS-MT-01', '3570.688']
(Pdb) aa = iii[0]
(Pdb) a = 'booo'
(Pdb) iii
['1003 GPVR_L0003A_1 GS-MT-01', '3570.688']
(Pdb) ii
[['1003 GPVR_L0003A_1 GS-MT-01', '3570.688']]
(Pdb) aa = 'boo'
(Pdb) ii
[['1003 GPVR_L0003A_1 GS-MT-01', '3570.688']]
(Pdb) iii
['1003 GPVR_L0003A_1 GS-MT-01', '3570.688']
(Pdb) iii[0] = 'boo'
(Pdb) ii
[['boo', '3570.688']]
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