Conquer Python Control Flow: Become a Code Master

Control flow statement

• Conditional statements: if, elif, else statements are used to test conditions and execute different code blocks based on the results.
• Loop statements: The for and while loop statements are used to repeatedly execute a block of code until a specific condition is met.
• Branch statements: break and continue statements are used to exit or skip from a loop or function.
• Exception handling statements: try, except and finally statements are used to handle errors that may occur during program execution.

Conditional statements

Conditional statements use the following syntax:

if condition:
# Code to be executed if condition is true
elif condition2:
# Code to be executed if condition2 is true
else:
# Code to be executed if no conditions are true

The condition can be any expression that evaluates to True or False.

loop statement

Loop statements allow you to execute a block of code repeatedly until a certain condition is met.

• for loop: Used to traverse all elements in the sequence. The syntax is as follows:

for item in sequence:
# Code to be executed for each item

• while loop: Used to execute a block of code as long as the condition is true. The syntax is as follows:

while condition:
# Code to be executed while condition is true

Branch statement

Branch statements are used to exit or skip from a loop or function.

• break: Exit the loop or function immediately.
• continue: Skip the rest of the current loop and continue with the next round.

Exception handling statements

Exception handling statements enable you to catch and handle errors that may occur during program execution.

• try block: Contains code that may throw an exception.
• except block: Handle exceptions, specify a specific exception type or use wildcards to catch all exceptions.
• finally block: Code that is always executed regardless of whether an exception is thrown.

Best Practices in Control Process

• Use indentation instead of braces to indicate code blocks.
• Avoid excessive nesting of control statements as it can make the code difficult to read and maintain.
• Use exception handling to handle errors gracefully and keep your code robust.
• Use break and continue statements in loops only when absolutely necessary, as they can harm the readability and maintainability of your code.
• Take full advantage of python's list comprehensions and generator expressions to express loops and conditional statements concisely.

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