How to write to files

number = 0

while number < 10:
    with open('myfile.txt', mode='a+') as f:
        f.write("Hello, how are you today \n",)
        number += 1

with open('myfile.txt', mode='r') as f:
    print(f.read())


with open('myfile.txt', mode='w') as f:
    f.write("")