How would one answer this foor loop question using proper python syntax:
def int_all_2(str_list):
'''(list of str) -> NoneType
Replace every str element of str_list with its corresponding
int version.
For example,
>>> sl = ['100', '222', '2', '34']
>>> int_all_2(sl)
>>> sl
[100, 222, 2, 34]
'''
Would it be like this?
l = []
for x in str_list:
l.append (int_all_2(x))
return l
If you want to convert each element of the list to integer and then return a new list you can use map function :
def strs2ints(l):
return map(int,l)
You should also note that function strs2ints doesn't change the contents of array l.
In case you want to change the contents of the original array l, which I do not recommend(you should prefer using "clean" functions over functions with side-effects) you can try the following code :
def strs2ints(l):
for i in range(len(l)):
l[i] = int(l[i])
Assuming your list contains only string representation of numeric integers, you don't even need a function, just list comprehension:
l = [int(itm) for itm in str_list]
If you want to ignore possible strings:
l = [int(itm) for itm in str_list if not itm.isalpha]
Or, if you require a function:
def int_all(str_list):
return [int(itm) for itm in str_list]
l = [int(itm) for itm in str_list]