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Variables

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Jul 7, 2022

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3 pages

Python Data Types and Variables Fun Worksheet with Answers

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Los

@los

Python variables and data types overview: Understanding fundamental concepts for... Show more

Activity 3.2.1 Where does the name 'Boolean' come from? Boolean variables are named after George Boole who invented the mathematics of digit

Exploring Data Types in Python

This section delves deeper into Python's core data types and their characteristics.

String Data Type

Strings represent sequences of characters in Python:

Definition: A string is an immutable sequence of Unicode characters.

Example: "hello world", 'Python'

Highlight: Strings can be enclosed in single or double quotes.

Numeric Data Types

Python supports two main numeric types:

  1. Integers intint: Whole numbers without decimal points
  2. Floats floatfloat: Numbers with decimal points

Example:

print(type(15))    # Output: <class 'int'>
print(type(35.6))  # Output: <class 'float'>

Boolean Data Type

Booleans represent logical values:

Definition: A boolean is a data type that can have only two values: True or False.

Vocabulary: Boolean variables are named after George Boole, who invented the mathematics of digital logic.

Example:

print(type(True))   # Output: <class 'bool'>
print(type(False))  # Output: <class 'bool'>

Type Conversion

Python allows converting between different data types:

Example:

print(type("15"))    # Output: <class 'str'>
print(type(int("15")))  # Output: <class 'int'>

Highlight: Be cautious when converting between types, as not all conversions are valid or may result in data loss.

Activity 3.2.1 Where does the name 'Boolean' come from? Boolean variables are named after George Boole who invented the mathematics of digit

Python Variable Naming Conventions and Best Practices

This section covers important guidelines for naming variables in Python and provides examples of valid and invalid variable names.

Variable Naming Rules

When creating variables in Python, follow these rules:

  1. Start with a letter a−z,A−Za-z, A-Z or underscore _
  2. Can contain letters, numbers, and underscores
  3. Are case-sensitive
  4. Cannot use Python keywords or built-in function names

Highlight: Adhering to these rules prevents syntax errors and improves code readability.

Examples of Valid and Invalid Variable Names

Valid variable names:

  • houseNumber
  • house_number
  • _private_variable
  • myAge123

Invalid variable names:

  • 8HouseNumber startswithanumberstarts with a number
  • house Number containsaspacecontains a space
  • import PythonkeywordPython keyword

Example:

# Valid
houseNumber = 288
house_number = 288

# Invalid
8HouseNumber = 288  # SyntaxError
house Number = 288  # SyntaxError
import = 288        # SyntaxError

Highlight: Using invalid variable names results in a SyntaxError.

Best Practices for Variable Naming

  1. Use descriptive names that indicate the variable's purpose
  2. Follow the Python style guide PEP8PEP 8 for naming conventions
  3. Use lowercase letters for variable names
  4. Use underscores to separate words in multi-word variable names snakecasesnake_case

Example:

# Good variable names
user_age = 25
total_score = 100
is_logged_in = True

# Less descriptive names (avoid)
a = 25
x = 100
flag = True

Highlight: Clear and consistent variable naming improves code readability and maintainability.

Activity 3.2.1 Where does the name 'Boolean' come from? Boolean variables are named after George Boole who invented the mathematics of digit

Understanding Python Variables and Data Types

This guide explores key concepts related to variables and data types in Python, essential for beginners learning programming fundamentals.

Data Types and the type() Function

Python supports several basic data types:

  • Strings strstr: Text data enclosed in quotes
  • Integers intint: Whole numbers
  • Floats floatfloat: Numbers with decimal points
  • Booleans boolbool: True or False values

The type() function is used to determine the data type of a value or expression:

Example:

print(type("Fred"))  # Output: <class 'str'>
print(type(198))     # Output: <class 'int'>
print(type(88.9))    # Output: <class 'float'>
print(type(True))    # Output: <class 'bool'>

Highlight: Remember that True and False in Python must start with capital letters.

Working with Variables

Variables allow storing and manipulating data in Python programs:

myName = "Fred Smith"
myAge = 14
print(myName, myAge)  # Output: Fred Smith 14

Definition: A variable is a named storage location in a program that holds a value.

When creating variables, follow these guidelines:

  1. Use descriptive names
  2. Start with a letter or underscore
  3. Use only letters, numbers, and underscores
  4. Avoid Python keywords

Example: Valid variable names: house_number, houseNumber Example: Invalid variable names: 8HouseNumber, house Number, import

Highlight: Using invalid variable names results in a syntax error.



Can't find what you're looking for? Explore other subjects.

Students love us — and so will you.

4.9/5

App Store

4.8/5

Google Play

The app is very easy to use and well designed. I have found everything I was looking for so far and have been able to learn a lot from the presentations! I will definitely use the app for a class assignment! And of course it also helps a lot as an inspiration.

Stefan S

iOS user

This app is really great. There are so many study notes and help [...]. My problem subject is French, for example, and the app has so many options for help. Thanks to this app, I have improved my French. I would recommend it to anyone.

Samantha Klich

Android user

Wow, I am really amazed. I just tried the app because I've seen it advertised many times and was absolutely stunned. This app is THE HELP you want for school and above all, it offers so many things, such as workouts and fact sheets, which have been VERY helpful to me personally.

Anna

iOS user

I think it’s very much worth it and you’ll end up using it a lot once you get the hang of it and even after looking at others notes you can still ask your Artificial intelligence buddy the question and ask to simplify it if you still don’t get it!!! In the end I think it’s worth it 😊👍 ⚠️Also DID I MENTION ITS FREEE YOU DON’T HAVE TO PAY FOR ANYTHING AND STILL GET YOUR GRADES IN PERFECTLY❗️❗️⚠️

Thomas R

iOS user

Knowunity is the BEST app I’ve used in a minute. This is not an ai review or anything this is genuinely coming from a 7th grade student (I know 2011 im young) but dude this app is a 10/10 i have maintained a 3.8 gpa and have plenty of time for gaming. I love it and my mom is just happy I got good grades

Brad T

Android user

Not only did it help me find the answer but it also showed me alternative ways to solve it. I was horrible in math and science but now I have an a in both subjects. Thanks for the help🤍🤍

David K

iOS user

The app's just great! All I have to do is enter the topic in the search bar and I get the response real fast. I don't have to watch 10 YouTube videos to understand something, so I'm saving my time. Highly recommended!

Sudenaz Ocak

Android user

In school I was really bad at maths but thanks to the app, I am doing better now. I am so grateful that you made the app.

Greenlight Bonnie

Android user

I found this app a couple years ago and it has only gotten better since then. I really love it because it can help with written questions and photo questions. Also, it can find study guides that other people have made as well as flashcard sets and practice tests. The free version is also amazing for students who might not be able to afford it. Would 100% recommend

Aubrey

iOS user

Best app if you're in Highschool or Junior high. I have been using this app for 2 school years and it's the best, it's good if you don't have anyone to help you with school work.😋🩷🎀

Marco B

iOS user

THE QUIZES AND FLASHCARDS ARE SO USEFUL AND I LOVE THE SCHOOLGPT. IT ALSO IS LITREALLY LIKE CHATGPT BUT SMARTER!! HELPED ME WITH MY MASCARA PROBLEMS TOO!! AS WELL AS MY REAL SUBJECTS ! DUHHH 😍😁😲🤑💗✨🎀😮

Elisha

iOS user

This app is phenomenal down to the correct info and the various topics you can study! I greatly recommend it for people who struggle with procrastination and those who need homework help. It has been perfectly accurate for world 1 history as far as I’ve seen! Geometry too!

Paul T

iOS user

The app is very easy to use and well designed. I have found everything I was looking for so far and have been able to learn a lot from the presentations! I will definitely use the app for a class assignment! And of course it also helps a lot as an inspiration.

Stefan S

iOS user

This app is really great. There are so many study notes and help [...]. My problem subject is French, for example, and the app has so many options for help. Thanks to this app, I have improved my French. I would recommend it to anyone.

Samantha Klich

Android user

Wow, I am really amazed. I just tried the app because I've seen it advertised many times and was absolutely stunned. This app is THE HELP you want for school and above all, it offers so many things, such as workouts and fact sheets, which have been VERY helpful to me personally.

Anna

iOS user

I think it’s very much worth it and you’ll end up using it a lot once you get the hang of it and even after looking at others notes you can still ask your Artificial intelligence buddy the question and ask to simplify it if you still don’t get it!!! In the end I think it’s worth it 😊👍 ⚠️Also DID I MENTION ITS FREEE YOU DON’T HAVE TO PAY FOR ANYTHING AND STILL GET YOUR GRADES IN PERFECTLY❗️❗️⚠️

Thomas R

iOS user

Knowunity is the BEST app I’ve used in a minute. This is not an ai review or anything this is genuinely coming from a 7th grade student (I know 2011 im young) but dude this app is a 10/10 i have maintained a 3.8 gpa and have plenty of time for gaming. I love it and my mom is just happy I got good grades

Brad T

Android user

Not only did it help me find the answer but it also showed me alternative ways to solve it. I was horrible in math and science but now I have an a in both subjects. Thanks for the help🤍🤍

David K

iOS user

The app's just great! All I have to do is enter the topic in the search bar and I get the response real fast. I don't have to watch 10 YouTube videos to understand something, so I'm saving my time. Highly recommended!

Sudenaz Ocak

Android user

In school I was really bad at maths but thanks to the app, I am doing better now. I am so grateful that you made the app.

Greenlight Bonnie

Android user

I found this app a couple years ago and it has only gotten better since then. I really love it because it can help with written questions and photo questions. Also, it can find study guides that other people have made as well as flashcard sets and practice tests. The free version is also amazing for students who might not be able to afford it. Would 100% recommend

Aubrey

iOS user

Best app if you're in Highschool or Junior high. I have been using this app for 2 school years and it's the best, it's good if you don't have anyone to help you with school work.😋🩷🎀

Marco B

iOS user

THE QUIZES AND FLASHCARDS ARE SO USEFUL AND I LOVE THE SCHOOLGPT. IT ALSO IS LITREALLY LIKE CHATGPT BUT SMARTER!! HELPED ME WITH MY MASCARA PROBLEMS TOO!! AS WELL AS MY REAL SUBJECTS ! DUHHH 😍😁😲🤑💗✨🎀😮

Elisha

iOS user

This app is phenomenal down to the correct info and the various topics you can study! I greatly recommend it for people who struggle with procrastination and those who need homework help. It has been perfectly accurate for world 1 history as far as I’ve seen! Geometry too!

Paul T

iOS user

Subjects

Computer Science

Programming

Variables

 

Computer Science

•

288

•

Jul 7, 2022

•

3 pages

Python Data Types and Variables Fun Worksheet with Answers

user profile picture

Los

@los

Python variables and data types overview: Understanding fundamental concepts for effective programming

  • Python offers various data types including strings, integers, floats, and booleans
  • The type() function allows checking variable types
  • Proper variable naming conventions are crucial for writing valid Python... Show more

Activity 3.2.1 Where does the name 'Boolean' come from? Boolean variables are named after George Boole who invented the mathematics of digit

Sign up to see the contentIt's free!

Access to all documents

Improve your grades

Join milions of students

By signing up you accept Terms of Service and Privacy Policy

Exploring Data Types in Python

This section delves deeper into Python's core data types and their characteristics.

String Data Type

Strings represent sequences of characters in Python:

Definition: A string is an immutable sequence of Unicode characters.

Example: "hello world", 'Python'

Highlight: Strings can be enclosed in single or double quotes.

Numeric Data Types

Python supports two main numeric types:

  1. Integers intint: Whole numbers without decimal points
  2. Floats floatfloat: Numbers with decimal points

Example:

print(type(15))    # Output: <class 'int'>
print(type(35.6))  # Output: <class 'float'>

Boolean Data Type

Booleans represent logical values:

Definition: A boolean is a data type that can have only two values: True or False.

Vocabulary: Boolean variables are named after George Boole, who invented the mathematics of digital logic.

Example:

print(type(True))   # Output: <class 'bool'>
print(type(False))  # Output: <class 'bool'>

Type Conversion

Python allows converting between different data types:

Example:

print(type("15"))    # Output: <class 'str'>
print(type(int("15")))  # Output: <class 'int'>

Highlight: Be cautious when converting between types, as not all conversions are valid or may result in data loss.

Activity 3.2.1 Where does the name 'Boolean' come from? Boolean variables are named after George Boole who invented the mathematics of digit

Sign up to see the contentIt's free!

Access to all documents

Improve your grades

Join milions of students

By signing up you accept Terms of Service and Privacy Policy

Python Variable Naming Conventions and Best Practices

This section covers important guidelines for naming variables in Python and provides examples of valid and invalid variable names.

Variable Naming Rules

When creating variables in Python, follow these rules:

  1. Start with a letter a−z,A−Za-z, A-Z or underscore _
  2. Can contain letters, numbers, and underscores
  3. Are case-sensitive
  4. Cannot use Python keywords or built-in function names

Highlight: Adhering to these rules prevents syntax errors and improves code readability.

Examples of Valid and Invalid Variable Names

Valid variable names:

  • houseNumber
  • house_number
  • _private_variable
  • myAge123

Invalid variable names:

  • 8HouseNumber startswithanumberstarts with a number
  • house Number containsaspacecontains a space
  • import PythonkeywordPython keyword

Example:

# Valid
houseNumber = 288
house_number = 288

# Invalid
8HouseNumber = 288  # SyntaxError
house Number = 288  # SyntaxError
import = 288        # SyntaxError

Highlight: Using invalid variable names results in a SyntaxError.

Best Practices for Variable Naming

  1. Use descriptive names that indicate the variable's purpose
  2. Follow the Python style guide PEP8PEP 8 for naming conventions
  3. Use lowercase letters for variable names
  4. Use underscores to separate words in multi-word variable names snakecasesnake_case

Example:

# Good variable names
user_age = 25
total_score = 100
is_logged_in = True

# Less descriptive names (avoid)
a = 25
x = 100
flag = True

Highlight: Clear and consistent variable naming improves code readability and maintainability.

Activity 3.2.1 Where does the name 'Boolean' come from? Boolean variables are named after George Boole who invented the mathematics of digit

Sign up to see the contentIt's free!

Access to all documents

Improve your grades

Join milions of students

By signing up you accept Terms of Service and Privacy Policy

Understanding Python Variables and Data Types

This guide explores key concepts related to variables and data types in Python, essential for beginners learning programming fundamentals.

Data Types and the type() Function

Python supports several basic data types:

  • Strings strstr: Text data enclosed in quotes
  • Integers intint: Whole numbers
  • Floats floatfloat: Numbers with decimal points
  • Booleans boolbool: True or False values

The type() function is used to determine the data type of a value or expression:

Example:

print(type("Fred"))  # Output: <class 'str'>
print(type(198))     # Output: <class 'int'>
print(type(88.9))    # Output: <class 'float'>
print(type(True))    # Output: <class 'bool'>

Highlight: Remember that True and False in Python must start with capital letters.

Working with Variables

Variables allow storing and manipulating data in Python programs:

myName = "Fred Smith"
myAge = 14
print(myName, myAge)  # Output: Fred Smith 14

Definition: A variable is a named storage location in a program that holds a value.

When creating variables, follow these guidelines:

  1. Use descriptive names
  2. Start with a letter or underscore
  3. Use only letters, numbers, and underscores
  4. Avoid Python keywords

Example: Valid variable names: house_number, houseNumber Example: Invalid variable names: 8HouseNumber, house Number, import

Highlight: Using invalid variable names results in a syntax error.

Can't find what you're looking for? Explore other subjects.

Students love us — and so will you.

4.9/5

App Store

4.8/5

Google Play

The app is very easy to use and well designed. I have found everything I was looking for so far and have been able to learn a lot from the presentations! I will definitely use the app for a class assignment! And of course it also helps a lot as an inspiration.

Stefan S

iOS user

This app is really great. There are so many study notes and help [...]. My problem subject is French, for example, and the app has so many options for help. Thanks to this app, I have improved my French. I would recommend it to anyone.

Samantha Klich

Android user

Wow, I am really amazed. I just tried the app because I've seen it advertised many times and was absolutely stunned. This app is THE HELP you want for school and above all, it offers so many things, such as workouts and fact sheets, which have been VERY helpful to me personally.

Anna

iOS user

I think it’s very much worth it and you’ll end up using it a lot once you get the hang of it and even after looking at others notes you can still ask your Artificial intelligence buddy the question and ask to simplify it if you still don’t get it!!! In the end I think it’s worth it 😊👍 ⚠️Also DID I MENTION ITS FREEE YOU DON’T HAVE TO PAY FOR ANYTHING AND STILL GET YOUR GRADES IN PERFECTLY❗️❗️⚠️

Thomas R

iOS user

Knowunity is the BEST app I’ve used in a minute. This is not an ai review or anything this is genuinely coming from a 7th grade student (I know 2011 im young) but dude this app is a 10/10 i have maintained a 3.8 gpa and have plenty of time for gaming. I love it and my mom is just happy I got good grades

Brad T

Android user

Not only did it help me find the answer but it also showed me alternative ways to solve it. I was horrible in math and science but now I have an a in both subjects. Thanks for the help🤍🤍

David K

iOS user

The app's just great! All I have to do is enter the topic in the search bar and I get the response real fast. I don't have to watch 10 YouTube videos to understand something, so I'm saving my time. Highly recommended!

Sudenaz Ocak

Android user

In school I was really bad at maths but thanks to the app, I am doing better now. I am so grateful that you made the app.

Greenlight Bonnie

Android user

I found this app a couple years ago and it has only gotten better since then. I really love it because it can help with written questions and photo questions. Also, it can find study guides that other people have made as well as flashcard sets and practice tests. The free version is also amazing for students who might not be able to afford it. Would 100% recommend

Aubrey

iOS user

Best app if you're in Highschool or Junior high. I have been using this app for 2 school years and it's the best, it's good if you don't have anyone to help you with school work.😋🩷🎀

Marco B

iOS user

THE QUIZES AND FLASHCARDS ARE SO USEFUL AND I LOVE THE SCHOOLGPT. IT ALSO IS LITREALLY LIKE CHATGPT BUT SMARTER!! HELPED ME WITH MY MASCARA PROBLEMS TOO!! AS WELL AS MY REAL SUBJECTS ! DUHHH 😍😁😲🤑💗✨🎀😮

Elisha

iOS user

This app is phenomenal down to the correct info and the various topics you can study! I greatly recommend it for people who struggle with procrastination and those who need homework help. It has been perfectly accurate for world 1 history as far as I’ve seen! Geometry too!

Paul T

iOS user

The app is very easy to use and well designed. I have found everything I was looking for so far and have been able to learn a lot from the presentations! I will definitely use the app for a class assignment! And of course it also helps a lot as an inspiration.

Stefan S

iOS user

This app is really great. There are so many study notes and help [...]. My problem subject is French, for example, and the app has so many options for help. Thanks to this app, I have improved my French. I would recommend it to anyone.

Samantha Klich

Android user

Wow, I am really amazed. I just tried the app because I've seen it advertised many times and was absolutely stunned. This app is THE HELP you want for school and above all, it offers so many things, such as workouts and fact sheets, which have been VERY helpful to me personally.

Anna

iOS user

I think it’s very much worth it and you’ll end up using it a lot once you get the hang of it and even after looking at others notes you can still ask your Artificial intelligence buddy the question and ask to simplify it if you still don’t get it!!! In the end I think it’s worth it 😊👍 ⚠️Also DID I MENTION ITS FREEE YOU DON’T HAVE TO PAY FOR ANYTHING AND STILL GET YOUR GRADES IN PERFECTLY❗️❗️⚠️

Thomas R

iOS user

Knowunity is the BEST app I’ve used in a minute. This is not an ai review or anything this is genuinely coming from a 7th grade student (I know 2011 im young) but dude this app is a 10/10 i have maintained a 3.8 gpa and have plenty of time for gaming. I love it and my mom is just happy I got good grades

Brad T

Android user

Not only did it help me find the answer but it also showed me alternative ways to solve it. I was horrible in math and science but now I have an a in both subjects. Thanks for the help🤍🤍

David K

iOS user

The app's just great! All I have to do is enter the topic in the search bar and I get the response real fast. I don't have to watch 10 YouTube videos to understand something, so I'm saving my time. Highly recommended!

Sudenaz Ocak

Android user

In school I was really bad at maths but thanks to the app, I am doing better now. I am so grateful that you made the app.

Greenlight Bonnie

Android user

I found this app a couple years ago and it has only gotten better since then. I really love it because it can help with written questions and photo questions. Also, it can find study guides that other people have made as well as flashcard sets and practice tests. The free version is also amazing for students who might not be able to afford it. Would 100% recommend

Aubrey

iOS user

Best app if you're in Highschool or Junior high. I have been using this app for 2 school years and it's the best, it's good if you don't have anyone to help you with school work.😋🩷🎀

Marco B

iOS user

THE QUIZES AND FLASHCARDS ARE SO USEFUL AND I LOVE THE SCHOOLGPT. IT ALSO IS LITREALLY LIKE CHATGPT BUT SMARTER!! HELPED ME WITH MY MASCARA PROBLEMS TOO!! AS WELL AS MY REAL SUBJECTS ! DUHHH 😍😁😲🤑💗✨🎀😮

Elisha

iOS user

This app is phenomenal down to the correct info and the various topics you can study! I greatly recommend it for people who struggle with procrastination and those who need homework help. It has been perfectly accurate for world 1 history as far as I’ve seen! Geometry too!

Paul T

iOS user