s="abc\tdef\tghi"
print(s)
#print(s.expandtabs(2))
#print(s.expandtabs(4))
#print(s.expandtabs(6))
#print(s.expandtabs(8))
s="python2batch"
print(s.isalnum())
s="python"
print(s.isalnum())
s="python 2 batch"
print(s.isalnum())
s="python2 batch2"
print(s.isalnum())
s="janhavi"
print(s.isdecimal())
s='salman khan'
print(s.isdecimal())
print(s.islower())
s="Good morning"
print(s.islower())
s="123 hello"
print(s.islower())
s='HELLO123'
print(s.isupper())
s='HELLo'
print(s.isupper())