Problem Solving and Python Programming MCQs | Page - 29

 pop() method returns the value when the key is passed as an argument and otherwise returns the default value(second argument) if the key isn’t present in the dictionary.

 more than one key can have the same value.

 the method popitem() removes a random key-value pair.

 now, a={1:[2,3,4],2:1} . a[1]

 the dictionary takes values of keys from the list and initializes it to the default value (value given in the second parameter). execute in python shell to verify.

 method any() returns true if any key of the dictionary is true and false if the dictionary is empty.

 w is used to indicate that file is to be written to.

 a is used to indicate that data is to be appended.

 the program will throw an error.

 execute in the shell to verify.