Update app.py

app.py

@@ -42,7 +42,7 @@ if uncase:
     st.write("uncase is pressed, and mytext ="+ mytext)
 elif unpunct:
     trans_chars = "'\",.:;-_*?/\n"
-    trans_table = source.maketrans("", "", trans_chars)
+    trans_table = mytext.maketrans("", "", trans_chars)
     mytext = mytext.translate(trans_table)
 elif unspace:
     st.write("test3")