Remove gendered language from introduction

Author: snaperty

100+ Python challenging programming exercises.txt

@@ -2,9 +2,9 @@
 
 1.	Level description
 Level	Description
-Level 1	Beginner means someone who has just gone through an introductory Python course. He can solve some problems with 1 or 2 Python classes or functions. Normally, the answers could directly be found in the textbooks.
-Level 2	Intermediate means someone who has just learned Python, but already has a relatively strong programming background from before. He should be able to solve problems which may involve 3 or 3 Python classes or functions. The answers cannot be directly be found in the textbooks.
-Level 3	Advanced. He should use Python to solve more complex problem using more rich libraries functions and data structures and algorithms. He is supposed to solve the problem using several Python standard packages and advanced techniques.
+Level 1	Beginner means someone who has just gone through an introductory Python course. Beginners can solve some problems with 1 or 2 Python classes or functions. Normally, the answers could directly be found in the textbooks.
+Level 2	Intermediate means someone who has just learned Python, but already has a relatively strong programming background from before. They should be able to solve problems which may involve 3 or 3 Python classes or functions. The answers cannot be directly be found in the textbooks.
+Level 3	Advanced. They should use Python to solve more complex problem using more rich libraries functions and data structures and algorithms. They are supposed to solve the problem using several Python standard packages and advanced techniques.
 
 2.	Problem template