python第21篇--字典的使用

#!/usr/bin/pythonab = {'Swaroop'  :'[e-mail]',      'Larry'    :'[e-mail]',      'Matsumoto':'[e-mail]',      'Spammer'  :'[e-mail]'}print("Swaroop's address is",ab['Swaroop'])del ab['Spammer']print('\nThere are {0} contracts in the address-book\n'.format(len(ab)))for name,address in ab.items():    print('Contract {0} at {1}'.format(name,address))ab['Guido'] = '[e-mail]'if "Guido" in ab:    print("\nGuido's address is",ab['Guido'])

结果：

~/Note/python # ./3using_dict.py Swaroop's address is [e-mail] are 3 contracts in the address-bookContract Larry at [e-mail] Matsumoto at [e-mail] Swaroop at [e-mail]'s address is [e-mail]