Q121. What is a lambda function in Python and when should you use it?
An anonymous function is known as a lambda function. This function can have any number of parameters but, can have just one statement. Example: 1 2 a = lambda x,y : x+y p...
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Q122. What is self in Python?
Self is an instance or an object of a class. In Python, this is explicitly included as the first parameter. However, this is not the case in Java where it's optional. It ...
Q123. How does break, continue and pass work?
Break Allows loop termination when some condition is met and the control is transferred to the next statement. Continue Allows skipping some part of a loop when some spec...
Q124. What does [::-1} do?
[::-1] is used to reverse the order of an array or a sequence. For example: ```python import array as arr ``` My_Array=arr.array('i',[1,2,3,4,5]) My_Array[::-1] Output: a...
Q125. How can you randomize the items of a list in place in Python?
Consider the example shown below: ```python from random import shuffle ``` x = ['Keep', 'The', 'Blue', 'Flag', 'Flying', 'High'] shuffle(x) print(x) The output of the fol...
Q126. What Are Python Iterators?
Iterators in Python are array-like objects which allow moving on the next element. We use them in traversing a loop, for example, in a "for" loop. Python library has a no...
Q127. How can you generate random numbers in Python?
Random module is the standard module that is used to generate a random number. The method is def ined as: 1 2 ```python import random ``` random.random The statement rand...
Q128. What is the difference between range & xrange?
For the most part, xrange and range are the exact same in terms of functionality. They both provide a way to generate a list of integers for you to use, however you pleas...
Q129. How do you write comments in Python?
Comments in Python start with a # character. However, alternatively at times, commenting is done using docstrings(strings enclosed within triple quotes). Example: #Commen...
Q130. What are the generators in Python?
A **generator** in Python is a special type of iterator that generates values on demand (**lazy evaluation**) rather than storing the entire dataset in memory at once. Ge...