try moving main function to __main__ module

oldabe/money_in/__init__.py

@@ -1,6 +1,6 @@
 #!/usr/bin/env python
 
-from decimal import Decimal, getcontext
+from decimal import Decimal
 from typing import List, Tuple
 
 from ..accounting import (
@@ -238,16 +238,3 @@ def process_payments_and_record_updates():
     write_valuation(posterior_valuation)
     ItemizedPaymentsRepo().extend(new_itemized_payments)
     AdvancesRepo().extend(advances)
-
-
-def main():
-    # Set the decimal precision explicitly so that we can
-    # be sure that it is the same regardless of where
-    # it is run, to avoid any possible accounting errors
-    getcontext().prec = 10
-
-    process_payments_and_record_updates()
-
-
-if __name__ == "__main__":
-    main()

oldabe/money_in/__main__.py

@@ -0,0 +1,15 @@
+from money_in import process_payments_and_record_updates
+from decimal import getcontext
+
+
+def main():
+    # Set the decimal precision explicitly so that we can
+    # be sure that it is the same regardless of where
+    # it is run, to avoid any possible accounting errors
+    getcontext().prec = 10
+
+    process_payments_and_record_updates()
+
+
+if __name__ == "__main__":
+    main()