So Yield is a keyword.first let's take an example. student = [] def read_file(): try: f=open("students.txt","r") for student in read_students(f): students.append(student) f.close() except Exception: print("Could not read file") def read_students(f): for line in f: yield line read_file() print(students) So what I have done is created a single function read_students and what it does it iterated over the file and yield the single line from that file.Â