a = {1: 'one', 3: 'three', 5: 'five', 7: 'seven', 9: 'nine'}
print('The keys present in dictionary are: ')
print(a.keys())
print('\n')
print('The values present in dictionary are: ')
print(a.values())
print('\n')
print('The items present in dictionary are: ')
print(a.items())
print('\n')
print('The length of dictionary is: ')
print(len(a))
print('\n')
if 7 in a:
    print('Seven is present')
else:
    print('Seven is not present')
print('\n')
if 2 in a:
    print('Two is present')
else:
    print('Two is not present')
print('\n')
print('The value of 9 in dictionary is: ', a.get(9))
print('\n')
a.pop(9)
print('The value of dictionary after removing 9 is: ', a)