New exercise.

Author: CodeMayPy

ex057.py

@@ -0,0 +1,6 @@
+# Make a program that reads a person's gender, but only accepts the values ​​'M' or 'F'. If it's wrong, ask
+# typing again until you have a correct value.
+gender = str(input('What is your gender?[F/M]:')).strip().upper()[0]
+while gender not in 'MmFf':
+    gender = str(input('Invalid data!! Please enter your gender:')).strip().upper[0]
+print(f'Gender {gender} successfully registered.')