Python 面试题与答案

问题 11. How does a function return values?

Functions return values using the return statement.

Ex:

def func():

    num = 10

    return num

问题 12. Define slicing in Python?

Slicing is a procedure used to select a particular range of items from sequence types such as Strings, lists, and so on.

a = ("a", "b", "c", "d", "e", "f", "g", "h")

x = slice(3, 5)

print(a[x])

Output:

('d', 'e')

问题 13. Define package in Python.

In Python packages are defined as the collection of different modules.

问题 14. Which command is used to delete files in Python?

OS.unlink(filename) or OS.remove(filename) are the commands used to delete files in Python Programming. Example:

import OS

OS.remove('hello.txt')

问题 15. Explain the difference between local and global namespaces?

• Local namespaces are created within a function when that function is called.
• Global namespaces are created when the program starts.