# 1 What’s Pickling and Unpickling?
- Pickling – the process of a Python object hierarchy being converted into a byte stream
- Unpickling – is the inverse operation, where a byte stream is converted back into an object hierarchy.
Pickling is also called serialization, marshalling, or flattening.
# 2 What Is the Difference Between range() and xrange() Functions in Python?
- range() – range returns a Python list object. Range keeps the entire list of numbers in memory.
- xrange() – returns an iterator and only keeps one number in memory at a time.
# 3 How to create a random number?
Use the random module. This module is used to generate random numbers.
# Import random
import random
# 4 How would you make a string all Upper Case?
var='codeit'
print(var.upper())
# 5 What is split used for?
split() method is used to separate a given string.
var="code it blog "
print(var.split())
# 6 How can files be deleted in Python?
import the OS Module to delete a file.
import os
os.remove("File_Name.txt")
# 7 How do you calculate percentiles ?
import the module Numpy
import numpy as np
varArray = np.array([1,2,3,4,5,6,7,8,9,10])
p = np.percentile(varArray, 75) #Returns 75th percentile
print(p)
# 8 What is unittest in Python ?
Python unittest module is used to test a unit of source code.
# 9 What is a dictionary in Python and how do you create one?
Dictionaries are used to store data values in key:value pairs
my_dict = {'Pet':'Dog', 'Size': 'Small'}
print(my_dict)
# 10 How many basic types of functions are available in Python?
Python has two types of functions.
1. Built-in
2. User-defined
Some Built-in functions include print(), len(),set() and int()
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Code It 