How to create a list of named lists in Python?-CodePudding

I need to create a list of named lists, so that I can iterate over them. This works, but I'm wondering if there isn't a better way.

terms = []; usedfors = []; broaders = []; narrowers = []
termlist = [terms, usedfors, broaders, narrowers]

The reason for doing it this way is that I have a function do_some_list_operation(l) and I want to do something like

for i in termlist:
    do_some_list_operation(i)

rather than

do_some_list_operation(terms)
do_some_list_operation(usedfors)
do_some_list_operation(broaders)
do_some_list_operation(narrowers)

I've been searching for 'how to build list of named lists' to no avail.

CodePudding user response：

The way you are doing it is fine but be aware that you are creating a list of lists when you defined termlist. If you want to have the name of the lists then termlist should be:

termlist = ["terms","usedfors", "broaders", "narrowers"]

Now if you want to use these strings as list names you can use globals() or locals() e.g.:

terms = [1]; usedfors = [2]; broaders = [3,4,8]; narrowers = [5]
termlist = ["terms","usedfors", "broaders", "narrowers"]

for i in termlist:
    print(sum(locals()[i]))

output: