How to accept arguments when running a shell script and pass them to a utility?

Question

bash

#!/bin/bash
trim =$1 # как убрать разрешение? . a что если *.ui? как послать вывод ls в массив и весь его обработать?
pyuic5 -x $1 -o $trim'.py' #а тут добавить .py

Interested in how to pass the first argument in the command ( main.ui - with file permission ui ) and cut .ui from it:
./build main.ui
and pass it to the pyuic5 utility, only the difference is in the file permission:
pyuic5 -x ARG(main.ui) -o main + .py

Answer 1

why/why???
source=$1
write $1 immediately