python is determined whether there is a key dictionary

Example: a dictionary generating #
d = { 'title': ' abc', 'age': 18}

IF 'title' in d.keys ():
　　Print ( 'present')
the else:
　　Print ( 'absent')

 

IF 'title' Not in d.keys ():
　　Print ( 'not present')
the else:
　　Print ( 'present')