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Articles by Sarika Singh
Page 10 of 15
How to catch TypeError Exception in Python?
A TypeError occurs in Python when we perform an operation on an object of an inappropriate type. For example, adding a string to an integer or calling a non-callable object. In this article, you will learn how to catch and handle TypeError exceptions using different methods in Python. TypeError is raised when you use the wrong data type in an operation. You can handle this exception using try-except blocks to prevent the program from crashing and help you correct input. Always test your code where type mismatches are possible, especially when working with user input or dynamic data. ...
Read MoreHow to catch IndentationError Exception in python?
Python uses indentation to define blocks of code instead of curly braces or keywords. If the indentation is not correct, Python raises an IndentationError. In this article, you will learn how to catch and handle IndentationError in Python using various approaches. An IndentationError in Python occurs when the indentation rules are not followed properly. It is raised during the parsing stage, not during execution. Therefore, to catch it, you must execute the code dynamically as a string. Using exec(), compile(), and custom wrapper functions, you can catch and handle this error in Python programs. Methods to Catch IndentationError ...
Read MoreHow to catch SyntaxError Exception in Python?
SyntaxError in Python occurs when the interpreter encounters invalid syntax, such as missing colons, unmatched parentheses, incorrect indentation, or invalid keywords. Since this error happens during the code compilation stage (before execution), it cannot be caught using a regular try-except block. To handle it, you must wrap the faulty code inside the exec() or compile() functions within a try-except block. Here, we are demonstrating the occurrence of SyntaxError and handling it using the following methods − exec() Method compile() Method Using a custom function with exception ...
Read MoreHow to catch EOFError Exception in Python?
EOFError is commonly seen when a program tries to read input, but there is no data left to read. This can happen when input is redirected from a file or when the user provides no input and presses Ctrl+D (Unix) or Ctrl+Z (Windows). The best way to catch EOFError is by using the try-except block. Below are various ways to handle EOFError properly in Python ? Using try-except block with EOFError Using try-except-else block Using try-except-finally block Using try-except Block with EOFError In Python, the ...
Read MoreHow to catch NameError Exception in Python?
Whenever Python comes across a variable or name that is not defined in the local or global namespace, it raises a NameError. This helps in debugging and ensures that variables are properly declared before using them. There are various ways to catch and handle a NameError in Python. The most common method is using a try-except block. Below are different approaches to catch a NameError exception − Using try-except block with NameError Using try-except-else block Using try-except-finally block Handling function calls before definition ...
Read MoreHow to catch OverflowError Exception in Python?
When an arithmetic operation exceeds the limits of the variable type, an OverflowError is raised. This commonly occurs with floating-point calculations that produce results too large for Python to represent. While integers in Python 3 have arbitrary precision, floating-point operations can still overflow. Using try-except to Catch OverflowError You can use a try-except block to catch an OverflowError and prevent your program from crashing when a calculation overflows ? Example: Catching an OverflowError In this example, we calculate a very large exponent which causes an OverflowError ? try: result = ...
Read MoreHow to catch ArithmeticError Exception in Python?
While executing statements that perform arithmetic operations, if any operation results in an illegal value, an arithmetic exception occurs at runtime. In Python, ArithmeticError represents this exception and serves as the base class for all errors that occur during arithmetic operations, such as division by zero, overflow, or floating-point errors. Basic Exception Handling with try-except You can use a try-except block to catch ArithmeticError and handle errors gracefully ? try: result = 10 / 0 except ArithmeticError: print("ArithmeticError caught: division by zero.") ArithmeticError caught: division ...
Read MoreHow will you explain that an exception is an object in Python?
In Python, exceptions are not just error messages; they are actual objects. Understanding that exceptions are objects helps you work with them more effectively, such as accessing their attributes or creating custom exceptions. What do We mean by Exception is an Object? When an exception occurs, Python creates an instance of an exception class. This instance contains information about the error, like its type, message, and traceback. Since exceptions are objects, you can interact with them just like any other Python object. Example: Catching an exception object In the following example, we catch a ZeroDivisionError and ...
Read MoreHow do you handle an exception thrown by an except clause in Python?
In Python, sometimes an except block itself may raise an exception. Handling such exceptions properly is important to make sure that your program does not crash unexpectedly and to maintain clean error handling. Exceptions raised inside an except block can be handled by nesting try-except blocks within it or using proper exception chaining techniques. Understanding Exceptions in except Blocks An except block is meant to handle errors, but it can also raise exceptions if the code inside it causes errors. You need to handle these secondary exceptions to avoid program termination. Example: Unhandled Exception in except ...
Read MoreHow to capture and print Python exception message?
In Python, you can capture and print exception messages using try and except blocks in multiple ways, such as − Using the as keyword Using the type() function Using the traceback module Exception messages provide details about what went wrong, which is helpful for debugging and error handling. Using the 'as' Keyword You can assign the exception to a variable using the as keyword inside the except block. This allows you to access and print the actual error message ? Example: ...
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