Python - Change List Items

Question

Initially, we have name and numbers inside list, it is necessary to convert all in new list

name1 = [u'pPlane1']
list1 = [19, 20, 21, 22, 24]

The desired result:

list2 = ['pPlane1.e[19]', 'pPlane1.e[20]', 'pPlane1.e[21]', 'pPlane1.e[22]', 'pPlane1.e[24]']

I would be grateful for any help :)

Answer 1

You can use list comprehension to create the new list directly from the source. By using string formatting, you can create the target string of each element nicely.

list2 = ['{}.e[{}]'.format(name1[0], num) for num in list1]

If name1 contains multiple names, you could create a cartesian product like this:

list2 = ['{}.e[{}]'.format(name, num) for num in list1 for name in name1]

For example:

>>> name1 = ['pPlane1', 'pPlane2']
>>> list1 = [19, 20, 21]
>>> ['{}.e[{}]'.format(name, num) for num in list1 for name in name1]
['pPlane1.e[19]', 'pPlane2.e[19]', 'pPlane1.e[20]', 'pPlane2.e[20]', 'pPlane1.e[21]', 'pPlane2.e[21]']

Answer 2

list2 = [name1[0]+'.e['+str(i)+']' for i in list1]