Delete sub-list from list in python

Question

I need to remove the sub lists from a list in Python.

For example: The main list A contains

A=[ 'a,b,c', 'd,e,f' , 'g,h,i' , 'g,l,m' , 's,l,k' , 'd,k,l', 'a,g,d' ]

I need to remove the sub lists from A which begin with the items in the following list:

B = ['g','d']

so that Final List A = [ 'a,b,c', 's,l,k' , 'a,g,d' ]

Thanks in advance

Does this answer your question? Filtering a list of strings based on contents, Checking whether a string starts with XXXX — wjandrea
– wjandrea, Commented Jun 17, 2020 at 0:24
Even your output seems wrong. It should be ['a,b,c', 's,l,k', 'a,g,d']. 2nd Element 'd,e,f' should also be removed as start element 'd' is in second list. — Astik Anand
– Astik Anand, Commented Jun 17, 2020 at 0:27

DirtyBit · Accepted Answer · 2020-06-17 00:20:13Z

2

Using list comprehension:

print([x for x in A if x[0] not in ['g', 'd']])

answered Jun 17, 2020 at 0:20

DirtyBit

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2 Comments

@CeliusStingher how does it not?

Sorry, my bad. It does work I was having the wrong input. Changed to +1

Astik Anand · Accepted Answer · 2020-06-17 00:25:57Z

0

You can do it using list comprehension and split(",").

print([e for e in A if e.split(",")[0] not in B])

Output

['a,b,c', 's,l,k', 'a,g,d']

Your output above for your approach is wrong. 2nd Element 'd,e,f' should also be removed as start element 'd' is in second list.

answered Jun 17, 2020 at 0:25

Astik Anand

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@P_Ar, glad that it helped.