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Questions and Answers
Conditional statements are statements in Python that provide a choice for the control flow based on a ______.
Conditional statements are statements in Python that provide a choice for the control flow based on a ______.
condition
The most simple decision-making statement in Python is the ______ statement.
The most simple decision-making statement in Python is the ______ statement.
if
In Python, ______ relies on indentation to define scope in the code.
In Python, ______ relies on indentation to define scope in the code.
indentation
The ______ statement allows you to execute code when a certain condition is true, and an alternative code block when it is false.
The ______ statement allows you to execute code when a certain condition is true, and an alternative code block when it is false.
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The ______ expression is a compact way to evaluate conditions and return values.
The ______ expression is a compact way to evaluate conditions and return values.
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The ______ statement is used to execute a block of code if a condition is true.
The ______ statement is used to execute a block of code if a condition is true.
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An ______ statement can be used to execute a different block of code if the condition in the if statement is false.
An ______ statement can be used to execute a different block of code if the condition in the if statement is false.
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A nested if-else statement means an if or else statement inside another ______ statement.
A nested if-else statement means an if or else statement inside another ______ statement.
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The ______ statement allows you to check multiple conditions in sequence.
The ______ statement allows you to check multiple conditions in sequence.
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If none of the conditions are true, the final ______ statement will be executed.
If none of the conditions are true, the final ______ statement will be executed.
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Study Notes
Lesson 7: Conditionals, Loops, and Input
- The lesson covers conditionals, loops, and the input() function in computer programming.
- Objectives include defining conditionals and loops, using them, and allowing user input in programs.
IDLE Editor
- To run a Python program, click File > New File or use Ctrl + N. Then press F5.
PyCharm Editor
- Create a new Python file: click the project root, then New > Python File, and type the new file name.
- Run the program: Shift + Alt + F10
Conditional Statements
- Conditional statements in Python allow choices based on conditions.
- The program's flow is determined by the outcome of the conditions.
- Lines of code are executed if particular conditions are met.
Types of Conditional Statements
- if Statement: Simplest decision-making statement. Executes a block of code if the condition is true; else, it doesn't execute.
- Python uses indentation to define scope.
- if-else Statement: Executes one block of code if the condition is true and another block if it is false.
- Nested if-else Statement: An if-else statement contained within another if-else statement. Allows for more complex conditions.
- if-elif-else Statement: Tests multiple conditions sequentially. Executes the first true condition's code block and skips the rest. If no condition is true, the else block runs.
- Ternary Operator/Expression: A more concise way to write simple if-else statements in one line.
Logical Operators
- and: Both conditions must be True for the result to be True.
- or: At least one condition must be True for the result to be True.
- not: Reverses the boolean value of the argument.
Loops
- Loops allow blocks of code to repeat until a condition is met.
- They provide a way to avoid writing the same code many times.
- The advantage if that blocks of code are executed the specific number of times.
while Loop
- Allows code execution as long as the condition is True.
- i+=1 is equivalent to i = i +1 .
for Loop
-
Loops over each item in a sequence or collection.
-
Iterating through Collections
- Iterates through tuples, lists, sets, and dictionaries in Python.
input() Function
- The input() function displays a prompt and gets user input.
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Description
This quiz focuses on the fundamentals of conditionals, loops, and user input in Python programming. Learn how to implement decision-making statements and understand the flow of your programs. Ideal for beginners looking to strengthen their coding skills.
