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Introduction to Python (dev copy)
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Introduction to Python (dev copy)

Introduction to Python (dev copy)

1. First Acquaintance with Python
The Very First Steps in PythonHow to Use Comments for ReadabilityPerform Simple Math in PythonHandle More Challenging Math in PythonBringing Python Fundamentals Together
2. Variables and Types in Python
How to Store Numbers in PythonPython Naming Rules for VariablesHow to Work with Variables in PythonData Types in PythonChallenge: Converting Kilometers to MilesStore Text with Strings in PythonString Indexing in PythonNegative Indexing and String Length in PythonString Slicing in PythonChallenge: Retrieving Letters from StringString Concatenation in Python
3. Conditional Statements in Python
Boolean Data Type in PythonChallenge: Working with Comparison OperatorsHow to Combine Conditions in PythonChallenge: Working with Logical OperatorsMembership Operators and Type Comparisons in PythonHow to Use if/else Expressions in PythonChallenge: Running a Grocery StoreChallenge: Creating Odd and Even Logicif/elif/else ExpressionsChallenge: Running Grocery Store ExtendedChallenge: Outputting Positive, Negative or Zero
4. Other Data Types in Python
Python ListsCommon List Methods in PythonChallenge: Updating ListNested Lists in PythonChallenge: Retrieving Information from Nested ListPython TuplesCommon Tuple Methods in PythonChallenge: Updating TupleNested Tuples in PythonChallenge: Retrieving Information from Nested TuplePython DictionariesChallenge: Completing DictionaryCommon Dictionary Methods in PythonChallenge: Updating Dictionary
5. Loops in Python
Explore the while Loop in PythonChallenge: Working with the While LoopExplore the for Loop in PythonChallenge: Working with the For LoopRange Function in PythonChallenge: Using the Range FunctionHow to Iterate Over Indexes in PythonExplore Nested Loops in Python
6. Functions in Python
Built-in Functions in PythonChallenge: Converting HeightsHow to Create Functions in PythonsChallenge: Writing First FunctionUse of if/else Statements in Python FunctionsChallenge: Identifying Positive Values Functions Without Return in PythonChallenge: Creating Logging FunctionModifying Functions in PythonChallenge: Updating Logic of the FunctionLambda Functions in PythonChallenge: Creating Lambda Function

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Challenge: Retrieving Letters from String

Uppgift

Swipe to start coding

You're given the string "This is string for learning" stored in the variable test_str. Your tasks are to:

  1. Retrieve and display the first character of the test_str (using the first print() function).
  2. Retrieve and display the last character of the test_str (using the second print() function).
  3. Retrieve and display the word string from the test_str variable.

Lösning

Switch to desktopByt till skrivbordet för praktisk övningFortsätt där du är med ett av alternativen nedan
Var allt tydligt?

Hur kan vi förbättra det?

Tack för dina kommentarer!

Avsnitt 2. Kapitel 10
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book
Challenge: Retrieving Letters from String

Uppgift

Swipe to start coding

You're given the string "This is string for learning" stored in the variable test_str. Your tasks are to:

  1. Retrieve and display the first character of the test_str (using the first print() function).
  2. Retrieve and display the last character of the test_str (using the second print() function).
  3. Retrieve and display the word string from the test_str variable.

Lösning

Switch to desktopByt till skrivbordet för praktisk övningFortsätt där du är med ett av alternativen nedan
Var allt tydligt?

Hur kan vi förbättra det?

Tack för dina kommentarer!

Avsnitt 2. Kapitel 10
Switch to desktopByt till skrivbordet för praktisk övningFortsätt där du är med ett av alternativen nedan
Vi beklagar att något gick fel. Vad hände?
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