How to delete the same string in python

Question

I use python3.6 I want to delete the same string,and this is my code.

r = [['I1', 'I2'], ['I1', 'I3'], ['I1', 'I5'], ['I2', 'I3'], ['I2','I4'], ['I2', 'I5']]
for v in range(len(r)):
    for k in range(v+1,len(r)):
        union = list(set(r[v]) | set(r[k]))
        print(sorted(union))

and results is:

['I1', 'I2', 'I3']
['I1', 'I2', 'I5']
['I1', 'I2', 'I3']
['I1', 'I2', 'I4']
['I1', 'I2', 'I5']
['I1', 'I3', 'I5']
['I1', 'I2', 'I3']
['I1', 'I2', 'I3', 'I4']
['I1', 'I2', 'I3', 'I5']
['I1', 'I2', 'I3', 'I5']
['I1', 'I2', 'I4', 'I5']
['I1', 'I2', 'I5']
['I2', 'I3', 'I4']
['I2', 'I3', 'I5']
['I2', 'I4', 'I5']

how can I delete the same string?

Do you mean duplicate strings? Also, please clarify if you don't mean list of strings. You can show that by adding your expected output to your question. — Kasravnd
– Kasravnd, Commented Dec 12, 2018 at 14:20

Ala Tarighati · Accepted Answer · 2018-12-12 14:39:03Z

2

I created Union_list to keep track of what already got printed:

Union_list = [] 
r = [['I1', 'I2'], ['I1', 'I3'], ['I1', 'I5'], ['I2', 'I3'], ['I2','I4'], ['I2', 'I5']]
for v in range(len(r)):
    for k in range(v+1,len(r)):
        union = sorted(list(set(r[v]) | set(r[k])))
        if union not in Union_list:
            Union_list.append(union)
            print(union)

Output:

['I1', 'I2', 'I3']
['I1', 'I2', 'I5']
['I1', 'I2', 'I4']
['I1', 'I3', 'I5']
['I1', 'I2', 'I3', 'I4']
['I1', 'I2', 'I3', 'I5']
['I1', 'I2', 'I4', 'I5']
['I2', 'I3', 'I4']
['I2', 'I3', 'I5']
['I2', 'I4', 'I5']

edited Dec 12, 2018 at 14:39

answered Dec 12, 2018 at 14:23

Ala Tarighati

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1 Comment

Ala Tarighati Over a year ago

@mad_ sure. Fixed it now :)

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