src/fb3_reader/fb3.py

@@ -1,12 +1,10 @@
-import sys
 from zipfile import ZipFile
 # from bs4 import BeautifulSoup
 # from lxml import etree
 
 
-def reader():
-    files = input("Enter the path to file: ")
-    with ZipFile(files) as book:
-        for row in book.read('2/fb3/body.xml').decode('utf-8').splitlines():
-            opened = open("test.txt", "a")
-            opened.write(row)
+def reader(path_to_file):
+    with ZipFile(path_to_file) as book:
+        for book_content in book.read('2/fb3/body.xml').decode('utf-8').splitlines():
+            output_content = open("test.txt", "a")
+            output_content.write(book_content)

src/fb3_reader/fb3.pyi

@@ -0,0 +1 @@
+def reader(path_to_file: str): ...

src/main.py

@@ -1,4 +1,4 @@
 from fb3_reader import fb3
 
 if __name__ == '__main__':
-    fb3.reader()
+    fb3.reader(input("Enter path to file: "))