I'm trying to run a loop through a dir(androidhelper.Android) to find everything that starts with m and then lists it.

Question

This sounds simple enough but I couldnt figure it out.

There are like 5 items in the dir(androidhelper.Android) that start with the letter "m".
I just want to do this for practice.

What I've tried:

import androidhelper
droid = androidhelper.Android
direct = dir(droid)
for i in direct:
if i == "m":
print(i)
print(i)
#but the out is:
wifiCheck
#which is the last item in the list

The thing is is that it's looking for "m" only as a complete string, which doesnt exist in the list. I dont know how to tell it to search for a str that STARTS with m....

Can anyone help? Thanks :)

Answer 1

you can use startswith() function

you can write them with list comperhension like this.

filewithm = [i for i in direct if i.startswith("m")]

or if you want to simply print the items
[print(i) for i in direct if i.startswith("m")]

the first part before 'for' is an expression, its an action taken by the item in the list. and the if statement at the end act as a filter

Answer 2

Taste Thank you very much for this explanation... appreciate it.

Although the i part before the "for" still confuses me. When you refer to the item in the list are you are referring to the second "i" or the "m"?

Answer 3

the i before for means, "do nothing to it, just store it directly to a new list"

what i meant by the item is the second i, the one that is part of the for that pass the filter check if the filter exist