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Grokking Python Fundamentals

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What will be the output of the following code?

my_dict = {'name': 'John', 'age': 30}
print(my_dict['age'])

A

John

B

{'name': 'John', 'age': 30}

C

30

D

'age'

What will the following code snippet return?

data = {'key1': 100, 'key2': 200, 'key3': 300}
print(data.get('key4', 'Not Found'))

A

300

B

'Not Found'

C

KeyError

D

None

Which of the following statements about Python dictionaries is NOT true?

A

Dictionaries can be nested within other dictionaries.

B

Dictionaries maintain elements in the order they were added as of Python 3.7.

C

All dictionary keys must be of the same type.

D

Dictionaries are mutable.

What will the output of the following code?

settings = {'theme': 'dark', 'language': 'English'}
key_exists = 'theme' in settings
print(key_exists)

A

True

B

False

C

KeyError

D

None

What Python method is used to iterate over the keys and values in a dictionary simultaneously?

A

keys()

B

values()

C

items()

D

pairs()

What is the result of merging two dictionaries using the update() method?

dict1 = {'a': 1, 'b': 2}
dict2 = {'b': 3, 'c': 4}
dict1.update(dict2)
print(dict1)

A

{'a': 1, 'b': 2}

B

{'a': 1, 'b': 3, 'c': 4}

C

{'b': 3, 'c': 4}

D

ValueError

.....

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