for c in s:
if c.islower():
print c
string = "python"
string.islower()
#returns true or false
#or we can use this
string == string.lower()
#returns true or false
y = text = "HI THIS IS HUSSEIN ASADI FROM IRAN"
y = text.lower()
print(y)
Text = "python is easy"
print(Text.islower())