for var in "ab8!mn":
    if var.isalpha():
        print(var)
2fc7d03fc0e68b48fba2f30c3ca6f70df2f59742
<mask token>

for var in 'ab8!mn':
    if var.isalpha():
        print(var)

for var in "ab8!mn":
    if var.isalpha():
        print(var)