Here are 50 or more of the most common Python interview questions and answers that will help you pass one of the hardest interviews.
1. What type of programming does Python support?
Python can be used for both Procedural Programming and Object-Oriented Programming. You can also use both of these ways in the same Python program.
2. List the types of data that Python already has.
Python gives you the following datatypes:
1. List
2. Tuple
3. Dictionary
4. String
5. Number
6. Set
3. Find out how Tuples and Lists are different.
Tuples and Lists are both ways to store a series of data. One difference between them is that once a Tuple is defined, it cannot be changed in any way, while a List can be changed.
4. List the most popular Python frameworks.
Django and Pyramid are the main frameworks.
Bottle and Flask are the minor Frameworks
5. What does the Python specification mean by Lambda?
It is a single expression that is often used as an inline function. It is an Anonymous Method.
6. List the ways that Python programming can be used.
1. Web Frameworks like DJango and Pyramid are used for Web Application Development.
2. Game Development
3. Applications that run on desktops
4. Microframeworks, like Bottle and Flask, are very small.
7. What does the Python grid() method do?
All of the widgets in the frame of a Python GUI Program have the grid() method. It is linked to a layout manager, which lets you put widgets in a Frame in the way you want.
8. Is Python a language for writing scripts or not?
Python is a programming language that can be used for a number of different things. It is also a Scripting Language because it can be used to make HTML Code, which is used for Web Development.
9. Tell me about the modes in the Python Programming Environment.
In Script Mode, you can compile and save Python programs, which you can\’t do in Interactive mode.
Interactive Mode: This mode is like a scratch pad where you can try out different codes in the Python Environment.
We should use Script Mode to make it possible to run.
10. What is Python Slicing?
Slicing is a term that is used to make output from Lists and Tuples that is cut up or changed.
11. Enlist Classes in Games Module that are used often in Livewires Package?
Most of the time, the following Classes are used in Games Module under Livewires Package:
Text
Screen
Sprite
Message
12. How is Print(\”First World\”) different from print(\”First World\”)?
The case is important in the Python programming language. So, if you typed Print(\”First World\”), you would get an error because the syntax is wrong. But print(\”First World\”) would be just fine.
13. How do you use Python to make a RadioButton Element?
The Tkinter Module has the RadioButton Class. First, we have to import it, and then we can use the following command to take in a frame label:
radiobutton1 = Radiobutton(frame1, text= \”Python Programming\”, value=0)
radiobutton1.grid()
radiobutton1 is a variable that holds the Radio Button Element, and frame1 is the name of the Frame variable on which we want to change our Radio Button. A Radio Button\’s default value is 1, which means \”Selected.\” We need to put value=0 in there.
14. How to ask the user for something in Python?
Python comes with a built-in way to get information from the user.
The code looks like this: input(\”Enter your Input\”)
To store the input in a variable, however, you must write the name of the variable before the input() method.
x1=input(\”Enter your Input\”) is one way to do it.
15. How do you end a line of Python code?
Python is a language that is very useful and easy to learn. A Semi-Colon can be used to end a line of code in Python. But you don\’t have to use a semicolon at the end of every single line. You can choose whether to use it or not.
16. List the different Exceptions that Python has found?
Here are the different exceptions that Python Environment finds:
1. IOError
2. IndexError
3. KeyError
4. NameError
5. SyntaxError
6. ValueError
7. TypeError
17. What is Python\’s namespace?
Every placeholder for a Python variable has a namespace. It is a placeholder for an object to which a variable can be linked.
18. What is a Python GUI Frame?
In Python, a Frame can be used to store other Graphical User Interface (GUI) elements like Label, Text Entry, Text Box, Check Button, RadioButton, etc.
19. How do you add the comment to a Python program?
The Python Programming Environment has good commenting features that make it easy for developers to document the code. With the following command, you can add a comment to a Python program:
Syntax:
# Your Comment Here
20. How are the input() method and the raw input() method different?
The raw input() method gives back string values, while the input() method gives back numbers.
In Python 2.x, the Input() method was used, but in Python 3.x and later, the raw input() method is used. In Python 3.x, however, the raw input() method has taken the place of the input() method.
21. What is the difference in syntax between Lists and Tuples?
Lists and Tuples are both ways to store a series of data. But a big difference between them is that Tuples are written with parenthesis (), while Lists are written with brackets [].
22. What\’s the difference between a Tkinter Module Text Entry element and a Text Box element?
A Text Entry element is used to accept only one line of text, while a Text Box has space for multiple lines of text.
23. How do you use Python to make a Check Button Element?
The Tkinter Module has the CheckButton class. First, we have to import it, and then we can use the following command to take in a frame label:
checkbutton01 = Checkbutton(frame1, \”Python Programming\”)
checkbutton01.grid()
checkbutton01 is a variable that holds the Check Button Element, and frame1 is the name of the Frame variable on which we want to change our Check Button. It takes a parameter called Text, which is used to show the name of the Check Button.
24. What\’s different about a Lambda and a Def?
A function called Def can hold more than one expression, while a function called Lambda can only hold one expression. A return statement can be part of a Def method, but it can\’t be part of a Lambda. A lambda can be used inside of dictionaries and lists.
25. In Python, what is a Line Continuation Character?
A Line continuation character in Python is one that lets us continue a single line of code on the next line without changing what it means. We can do it with a Backslash, which is a Line continuation character that Python gives us.
26. How do you tell a Python Graphics Program what size a window is?
In Python GUI programming, we can set the size, or width and height, of a Window. The geometry() method can be used to define it. It needs to know two things: the width and the height.
geometry(\”width * height\”) is an example.
27. Make a list of the Python Looping constructs.
Python gives you two ways to make loops: the For Loop and the While Loop. Both of these ways of looping are the same. The only difference is in how the words are put together.
28. What is the Python range() method?
The Range() method in Python is used to make a loop. It takes in 2 parameters that are required and 1 parameter that is not.
Example: range (1,20,4)
After every other iteration between 1 and 10, this method prints a number. It prints 1, 5, 9, 13, and 17.
29. do Python code have spaces between lines?
In Python, it\’s very important to use tabs and spaces. In a Python program, we don\’t usually use braces to show where a function is used. With indentation, the Python Interpreter can figure out on its own what a function does. When you don\’t use tabs correctly in a Python program, errors usually happen.
30. How does a person find out where the pointer is in a file?
The tell() method is used to find out where the read/write pointer is in the file at the moment. There is no parameter that needs to be passed to this method.
Syntax:
FileVariableName.tell()
31. Add the built-in types that can change in the Python programming environment.
The Python Programming Environment has the following built-in types that can change:
1. Sets
2. Dictionaries
3. Lists
32. How do you use Python to make a Text Box Element?
The Tkinter Module has the Text Box Class. First, we have to import it, and then we can use the following command to take in a frame label:
text1 is Text(frame1, width = 50, height = 20)
text1.grid()
text1 is a variable that holds the Text Element, and frame1 is the name of the Frame variable on which we want to change our Text Box. Its width and height are the two parameters that describe its size.
It is a must to first define the Frame.
33. Add some of the GUI elements to the Python Tkinter module?
Some of the Tkinter GUI Elements used in Python are Frame, Label, Text Entry, Check Button, Radio Button, and Text Box.
34. How do you tell the file pointer to go to a certain place?
With the seek() method, you can move the File pointer to a certain place in a Text File. It takes two parameters, the first of which is required and the second of which is not.
Syntax:
seek(location, source)
35. Why does Python\’s Exception Handling use the Finally Block?
In Python, a Finally Block is often used with a try block and a catch block. No matter what happens at run time, a Finally Block always runs itself. In Python\’s Exception Handling technique, this is the execution block that is used by default.
36. What is a DocString, and how does it work?
Documenting Python Modules, Classes, and Methods is done with Document Strings, which are represented by DocStrings.
37. How does Python handle memory management?
Like other programming environments, the Python Programming Environment uses Garbage Collection Techniques to keep the memory in good shape. Also, the Private Heap is in charge of managing the memory, and the Python Memory Manager is in charge of managing the Private Heap.
38. How else can I use loops with the while loop and the for loop?
Python has a method called range() that can be used to make loops. It does the same thing that while and for loop do. It requires two parameters and lets you choose one more.
39. How can we get a Python program to use different packages?
Syntax:
from Package_Name import Module_Name
Example:
from coderazaa import programs
40. Does Compiled Python Code have Byte-Codes?
No. Most of the time, Python is an Interpreted Language. But first, the.py file is turned into something called Python Byte-Code, which is not a file with binary numbers like other programming environments. It has Python-specific instructions that help speed up the startup process.
41. Does Python have statements like Switch Case?
No, Switch Case statements are not possible in Python. It does, however, offer a different method called \”One-to-One Mapping.\”
42. How do you use Python to make a Button Element?
The Tkinter Module lets you use the Button Class. First, we have to import it, and then we can use the following command to take in a frame label:
button1 = Button(frame1, text = \”I this is a Button\”)
button1.grid()
button1 is a variable that holds the Button Element, and frame1 is the name of the Frame variable onto which we want to adjust our Button. It is a must to first define the Frame.
43. How do you use Python to print the sum of the digits from 1 to 50?
print(sum(range(1,101))
This command would print out the sum of all the numbers between 1 and 100.
44. What is Python\’s PEP 8?
PEP 8 is a set of rules for writing Python code so that other programmers can read it and use it. It is more of a rule for coding.
45. What is a Python Decorator?
You can wrap a method or class function with a decorator that runs a set of lines of code before or after the original code. Decorator also lets you add or change code in classes or methods.
46. What is Python\’s Django Framework?
Django is a high-level Python framework that is mostly used for building websites. This framework encourages development that is quick and effective, with designs that are clean and make sense. It was made by experienced developers and takes care of a lot of the trouble of Web development, so you can focus on writing your app instead of having to start from scratch. It\’s free and anyone can use it.
47. Is Python a programming language that is compiled or one that is read?
The end of a Python program is.py. First, these source files are turned into bytes (which does not contain the binary codes). These Byte Code files help speed up the process of starting up. Then, these byte-codes are sent to the Python Virtual Machine, where lines of code are read one after the other. This is what is meant by \”interpreted.\”
48. List the built-in types that can\’t be changed in the Python programming environment.
In the Python Programming Environment, the built-in types that can\’t be changed are:
1. Tuples
2. Numbers
3. Strings
49. How do we tell a Python program what Scope means?
In the Python programming environment, you can\’t use Braces to define the scope of a variable or method. But it uses Indents to let the Python interpreter decide on its own what the scope is. If you don\’t use the right indents, you\’ll usually get an error.
50. What is Python\’s Tkinter, and what does it do?
Tkinter is a Python module that programmers can use to make programs with a Graphical User Interface (GUI). The Tkinter module is used to bring into a Python program the methods needed to make a GUI.
51. How do you handle exceptions in Python?
Python throws an Exception when something goes wrong while the program is running. Try and catch blocks can be used to catch Python exceptions. If you\’re not sure about a statement, you can put it in the try block. If something goes wrong, the control moves to the catch block, where a pre-defined action can be run. This keeps the program from ending unexpectedly.
52. How do you use Python to make a Label Element?
The Tkinter Module has the Label Class. First, we have to import it, and then we can use the following command to take in a frame label:
label1 = Label(frame1, text = \”Here is Python label!\”)
label1.grid()
label1 is a variable that holds the Label Element, and frame1 is the name of the Frame variable on which we want to change our Label.
So, that was the list of some important Python interview questions and answers that are often asked in interviews. If you found something wrong or missing on the list above, please let us know by leaving a comment below.