Kursinnehåll

Python Advanced Concepts

1. Mastering Python Modules and Imports

Python Project Structure: Organizing Code for Scalability Understanding Python Modules Importing Modules in Python: Best Practices for Code Reusability Exploring Python Libraries: Built-in and Third-Party Solutions Python Standard Library: Essential Modules for Everyday Tasks Managing Python Packages

2. Mastering Error Handling in Python

Fundamentals of Error Handling in Python: Preventing Code Crashes Raising Exceptions in Python: Triggering and Managing Errors Executing Code After Exceptions: Handling Cleanup Operations Using Assertions in Python: Debugging and Ensuring Code Integrity Best Practices for Exception Handling

3. Mastering File Handling in Python

Introduction to File Handling in Python Reading and Writing Files: Handling Text and Data Efficiently Advanced File Operations: Modifying and Managing File Content Working with File Paths in Python Using Context Managers for File Handling in Python Creating Custom Context Managers Handling Binary Files in Python

4. Mastering Pytest Framework

Introduction to Testing in Python Pytest Framework: Setting Up and Running Automated Tests Using the Assert Statement in Pytest: Validating Test Conditions Test Parametrization in Pytest: Running Tests with Multiple Inputs

5. Mastering Unittest Framework

Introduction to Unittest in Python: Writing Structured Unit Tests Using Assert Methods in Unittest: Validating Test Results SetUp and TearDown in Unittest: Managing Test Environments Mocking Techniques in Unittest: Simulating Dependencies Advanced Mocking in Unittest

6. Mastering Iterators and Generators in Python

Python Iterables: Understanding Sequences and Data Structures Understanding Iterators in Python Lazy Evaluation in Python: Optimizing Memory and Performance Introduction to Generators: Yielding Values for Efficient Iteration Practical Applications of Generators: Real-World Use Cases

Executing Code After Exceptions: Handling Cleanup Operations

The try, except, else, and finally clauses form a combination that handles exceptions, performs cleanup, and executes code based on whether exceptions were raised or not.

When No Exceptions Raised

The else block is executed if NO exceptions were raised in the try block. It is useful for code that must be executed if the try block did not throw an error but should not be executed if there was an error.

Example Usage


              1234567
            
try:
    print("Trying to divide")
    result = 10 / 2
except ZeroDivisionError:
    print("Divided by zero!")
else:
    print("Division successful:", result)

In this example, the else clause runs only if no ZeroDivisionError is caught in the try block.

Executing Cleanup Actions

The finally block lets you execute code, regardless of whether an exception was raised or not. This is typically used for clean-up actions.

Example Usage


              123456789
            
try:
    print("Trying to divide")
    result = 10 / 0
except ZeroDivisionError:
    print("Divided by zero!")
else:
    print("Division successful:", result)
finally:
    print("Operation attempted.")

In this scenario, the finally clause will execute regardless of whether the try block succeeds or the except block catches an exception, ensuring that the message "Operation attempted." is printed in every case.

Uppgift

Swipe to start coding

Implement a complete error handling block with try, except, else, and finally clauses. Your task is to handle a simple calculation process.

Lösning

Byt till skrivbordet för praktisk övningFortsätt där du är med ett av alternativen nedan

Var allt tydligt?

Tack för dina kommentarer!

Avsnitt 2. Kapitel 3

Executing Code After Exceptions: Handling Cleanup Operations

The try, except, else, and finally clauses form a combination that handles exceptions, performs cleanup, and executes code based on whether exceptions were raised or not.

When No Exceptions Raised

Example Usage


              1234567
            
try:
    print("Trying to divide")
    result = 10 / 2
except ZeroDivisionError:
    print("Divided by zero!")
else:
    print("Division successful:", result)

In this example, the else clause runs only if no ZeroDivisionError is caught in the try block.

Executing Cleanup Actions

The finally block lets you execute code, regardless of whether an exception was raised or not. This is typically used for clean-up actions.

Example Usage


              123456789
            
try:
    print("Trying to divide")
    result = 10 / 0
except ZeroDivisionError:
    print("Divided by zero!")
else:
    print("Division successful:", result)
finally:
    print("Operation attempted.")

Uppgift

Swipe to start coding

Implement a complete error handling block with try, except, else, and finally clauses. Your task is to handle a simple calculation process.

Lösning

Byt till skrivbordet för praktisk övningFortsätt där du är med ett av alternativen nedan

Var allt tydligt?

Tack för dina kommentarer!

Avsnitt 2. Kapitel 3

Byt till skrivbordet för praktisk övningFortsätt där du är med ett av alternativen nedan