Working Code Sample Demonstrating Exceptions & Errors in Python
In this chapter, let’s discuss examples of the exceptions and errors.
When the parser finds a wrong statement, syntax errors happen. This might result from any number of syntactic errors in Python, including typos and improper indentation.
On the other hand, problems found during execution are known as exceptions. These can happen even when the script is syntactically sound but the operation being tried—trying to divide by zero, for example, or accessing a dictionary key that doesn't exist—is wrong.
Example
The following is an example of displaying all types of errors and exceptions in Python:
# Syntax Error (occurs when the code is not written correctly)
print("Hello World" # Missing closing parenthesis
# NameError (occurs when a variable is not defined)
x = 10
print(y) # y is not defined
# TypeError (occurs when an operation is performed on an incorrect data type)
x = 10
y = "20"
print(x + y) # Cannot add an integer and a string
# IndexError (occurs when trying to access an invalid index of a sequence)
my_list = [1, 2, 3]
print(my_list[3]) # Index 3 is out of range
# KeyError (occurs when trying to access a key that does not exist in a dictionary)
my_dict = {"a": 1, "b": 2}
print(my_dict["c"]) # Key "c" does not exist
# ZeroDivisionError (occurs when trying to divide by zero)
x = 10
y = 0
print(x / y) # Division by zero is not allowed
Example
Following is an example of a syntax error
try:
eval("if True print('Hello')")
except SyntaxError:
print("Caught a SyntaxError!")
Example
Following is an example of the exception
try:
result = 10 / 0
except ZeroDivisionError:
print("Caught a ZeroDivisionError!")
In this combined illustration:
The first try section runs a string of Python code that has a syntax problem using eval. The unless block is where the SyntaxError is captured and handled.
A runtime ZeroDivisionError is raised in response to the attempt to divide by zero in the second try block, even though it is a legitimate Python expression. The matching unless block likewise catches and handles this exception.
Debugging Python code efficiently requires an understanding of the distinction between syntax mistakes and exceptions. While exceptions can frequently be anticipated and handled gracefully inside the code, enabling the program to continue operating, syntax mistakes must be rectified for the code to execute.
Working Code Sample Demonstrating Exceptions & Errors in Python
In this chapter, let’s discuss examples of the exceptions and errors.
When the parser finds a wrong statement, syntax errors happen. This might result from any number of syntactic errors in Python, including typos and improper indentation.
On the other hand, problems found during execution are known as exceptions. These can happen even when the script is syntactically sound but the operation being tried—trying to divide by zero, for example, or accessing a dictionary key that doesn't exist—is wrong.
Example
The following is an example of displaying all types of errors and exceptions in Python:
python
# Syntax Error (occurs when the code is not written correctly)
print("Hello World" # Missing closing parenthesis
# NameError (occurs when a variable is not defined)
x = 10
print(y) # y is not defined
# TypeError (occurs when an operation is performed on an incorrect data type)
x = 10
y = "20"
print(x + y) # Cannot add an integer and a string
# IndexError (occurs when trying to access an invalid index of a sequence)
my_list = [1, 2, 3]
print(my_list[3]) # Index 3 is out of range
# KeyError (occurs when trying to access a key that does not exist in a dictionary)
my_dict = {"a": 1, "b": 2}
print(my_dict["c"]) # Key "c" does not exist
# ZeroDivisionError (occurs when trying to divide by zero)
x = 10
y = 0
print(x / y) # Division by zero is not allowed
Example
Following is an example of a syntax error
python
try:
eval("if True print('Hello')")
except SyntaxError:
print("Caught a SyntaxError!")
Example
Following is an example of the exception
python
try:
result = 10 / 0
except ZeroDivisionError:
print("Caught a ZeroDivisionError!")
In this combined illustration:
The first try section runs a string of Python code that has a syntax problem using eval. The unless block is where the SyntaxError is captured and handled.
A runtime ZeroDivisionError is raised in response to the attempt to divide by zero in the second try block, even though it is a legitimate Python expression. The matching unless block likewise catches and handles this exception.
Debugging Python code efficiently requires an understanding of the distinction between syntax mistakes and exceptions. While exceptions can frequently be anticipated and handled gracefully inside the code, enabling the program to continue operating, syntax mistakes must be rectified for the code to execute.
Python is commonly used for developing websites and software, task automation, data analysis, and data visualisation. Since it's relatively easy to learn, Python has been adopted by many non-programmers, such as accountants and scientists, for a variety of everyday tasks, like organising finances.
Is Python better than C++?
Python's syntax is a lot closer to English and so it is easier to read and write, making it the simplest type of code to learn how to write and develop with. The readability of C++ code is weak in comparison and it is known as being a language that is a lot harder to get to grips with.
Which is better Java or Python?
Learning Curve: Python is generally considered easier to learn for beginners due to its simplicity, while Java is more complex but provides a deeper understanding of how programming works. Performance: Java has a higher performance than Python due to its static typing and optimization by the Java Virtual Machine (JVM).
Is Python easy to learn?
Python can be considered beginner-friendly, as it is a programming language that prioritizes readability, making it easier to understand and use. Its syntax has similarities with the English language, making it easy for novice programmers to leap into the world of development.
How can I start Python programming?
To start coding in Python, you need to install Python and set up your development environment. You can download Python from the official website, use Anaconda Python, or start with DataLab to get started with Python in your browser.
Should I learn Python or Java first?
Learning Curve: Python is generally considered easier to learn for beginners due to its simplicity, while Java is more complex but provides a deeper understanding of how programming works.
Is Python enough to get a job?
Python alone isn't going to get you a job unless you are extremely good at it. Not that you shouldn't learn it: it's a great skill to have since python can pretty much do anything and coding it is fast and easy. It's also a great first programming language according to lots of programmers.
Is Python easy if I know Java?
The point is that Java is more complicated to learn than Python. It doesn't matter the order. You will have to do some things in Java that you don't in Python. The general programming skills you learn from using either language will transfer to another.
Can I learn Python in a month?
Read on for tips on how to maximize your learning. In general, it takes around two to six months to learn the fundamentals of Python. But you can learn enough to write your first short program in a matter of minutes. Developing mastery of Python's vast array of libraries can take months or years.
How to learn Python quickly?
6 Top Tips for Learning Python
Choose Your Focus. Python is a versatile language with a wide range of applications, from web development and data analysis to machine learning and artificial intelligence.
Practice regularly.
Work on real projects.
Join a community.
Don't rush.
Keep iterating.
How to practice Python on a laptop?
The following is a step-by-step guide for beginners interested in learning Python using Windows.
Set up your development environment.
Install Python.
Install Visual Studio Code.
Install Git (optional)
Hello World tutorial for some Python basics.
Hello World tutorial for using Python with VS Code.
Which YouTube channel is best for learning Python?
Best YouTube Channels to Learn Python
Corey Schafer.
sentdex.
Real Python.
Clever Programmer.
CS Dojo (YK)
Programming with Mosh.
Tech With Tim.
Traversy Media.
How to code in laptop?
Python can be written on any computer or device that has a Python interpreter installed, including desktop computers, servers, tablets, and even smartphones. However, a laptop or desktop computer is often the most convenient and efficient option for coding due to its larger screen, keyboard, and mouse.
Which code to learn first?
Write your first Python programStart by writing a simple Python program, such as a classic "Hello, World!" script. This process will help you understand the syntax and structure of Python code.
Where to study Python?
Google's Python Class.
Microsoft's Introduction to Python Course.
Introduction to Python Programming by Udemy.
Learn Python - Full Course for Beginners by freeCodeCamp.
Learn Python 3 From Scratch by Educative.
Python for Everybody by Coursera.
Learn Python 2 by Codecademy.
How to start Python for beginners?
Understand why you're learning Python. Firstly, it's important to figure out your motivations for wanting to learn Python.
Get started with the Python basics.
Master intermediate Python concepts.
Learn by doing.
Build a portfolio of projects.
Keep challenging yourself.
Which certification is best for Python?
Top 5 Python Certifications - Best of 2024
PCEP (Certified Entry-level Python Programmer)
PCAP (Certified Associate in Python Programmer)
PCPP1 & PCPP2 (Certified Professional in Python Programming 1 & 2)
Certified Expert in Python Programming (CEPP)
Introduction to Programming Using Python by Microsoft.
What is the salary of a Python developer in India?
The average salary for Python Developer is ₹5,55,000 per year in the India. The average additional cash compensation for a Python Developer is within a range from ₹3,000 - ₹1,20,000.
Is Python free in Microsoft store?
The Python interpreter and the extensive standard library are freely available in source or binary form for all major platforms from the Python website, https://www.python.org/, and may be freely distributed.
Is Python a good career option?
If you're looking for a lucrative and in-demand career path, you can't go wrong with Python. As one of the fastest-growing programming languages in the world, Python is an essential tool for businesses of all sizes and industries. Python is one of the most popular programming languages in the world today.
