I have three list and basically i want handle of storing their values in one go within the for loop. Below is what i am trying to accomplish
a = ['abc', 'efg']
b = ['hij', 'klm']
c = ['nop', 'qrs']
for i, g, t in a, b, c:
Insert into database %i and %j and %c
You can use the zip built-in function:
for i, g, t in zip(a, b, c):
Insert into database %i and %g and %t
zip([iterable, ...])
This function returns a list of tuples, where the i-th tuple contains the i-th element from each of the argument sequences or iterables
You can read the docs for more information
Note:
If your lists are not equally (by length) you can use the izip_longest from itertools lib.
itertools.izip_longest(*iterables[, fillvalue]) Make an iterator that
aggregates elements from each of the iterables. If the iterables are of uneven length, missing values are filled-in with fillvalue. Iteration continues until the longest iterable is exhausted.
For more info about izip_longest, read here
zip is a built-in function, not a keyword.
Another solution which is perhaps less clean compared to the zip answer provided elsewhere is to:
a=[1,2,3]
b=[4,5,6]
for i in range(len(a)):
insert_into_database(a[i],b[i])
would also work but is less clean/elegant :)
