تعلم بايثون من الصفر للاحتراف للمبتدئين : مشاريع على الجمل الشرطية
Introduction to Python Project: Student Grading System
Overview of the Grading Logic
- The session begins with a recap of the previous project, which involves classifying student scores into categories such as "Excellent" or "Good."
- The instructor checks if the score is greater than or equal to 90, displaying a message for "Excellent" if true.
- If not, it checks if the score is greater than or equal to 75 and provides feedback accordingly.
- Further conditions check if the score is above 50; otherwise, it indicates failure.
Conditional Statements in Python
- The instructor introduces conditional statements and comparisons (greater than, less than).
- A practical example is given where user input for a seat number determines whether they win a prize based on specific criteria.
Understanding Assignment vs. Comparison Operators
Key Differences Explained
- The instructor emphasizes the difference between using a single equals sign (
=) for assignment and double equals sign (==) for comparison.
- An error occurs when trying to use
=instead of==, highlighting common mistakes beginners make in coding.
Error Handling and Debugging
- The system prompts users about potential errors, guiding them towards correct syntax by suggesting they might have meant to use
==.
Implementing Exclusions in Conditions
Using 'Not Equal' Operator
- A scenario is presented where all participants win tickets except those with seat number 13.
- The instructor explains how to implement this logic using the 'not equal' operator (
!=), simplifying code structure compared to multiple conditional checks.
Streamlining Code with Logical Operators
Simplifying Condition Checks
- Instead of checking multiple conditions (greater than/less than), using
!=reduces complexity significantly.
Practical Projects for Skill Development
Suggested Projects
- Three projects are proposed:
- Password Check: Users enter a password that must match a predefined string.
- User Input Validation: Users respond with "yes," "no," or "maybe," receiving feedback based on their input.
- Number Guessing Game: Users guess a predetermined number, receiving feedback on correctness.