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Learn Python from Scratch
course content

Kursinhalt

Learn Python from Scratch

Learn Python from Scratch

1. The basics
Hello, World!Hello, me!VariablesCommentsIndentationNumbers and strings
2. Arithmetic operations
AdditionMultiplication and powerDivision and whole part division
3. Common data types
Data typesNumbersfloat and intStoring textStrings slicingConcatenation
4. Conditional statements
Boolean data typeCombining conditionsSimple if/else expressions (1/2)Simple if/else expressions (2/2)If/else expressions with multiple conditions (1/2)If/else expressions with multiple conditions (2/2)
5. Other data types
Lists (1/3)Lists (2/3)Lists (3/3)Tuples (1/3)Tuples (2/3)Tuples (3/3)Dictionaries (1/2)Dictionaries (2/2)
6. Loops
while loop (1/2)while loop (2/2)for loop (1/5)for loop (2/5)for loop (3/5)for loop (4/5)for loop (5/5)
7. Functions
Built-in functionsWriting your own functions (1/5)Writing your own functions (2/5)Writing your own functions (3/5)Writing your own functions (4/5)Writing your own functions (5/5)lambda functions

book
Comments

Before moving further, quick thing to learn: comments. Comment is a part of code which is not executed (ignored by the program). Comments are used as notes that developers leave for themselves or other users.

In Python there are single-line comments and multi-line comments (used less often).

Single-line comment start with symbol #. If placed at the beggining of the line entire line is ignored.


              
12

            
# this is a comment that I left as a note for myself
print("Hello, World!")
copy

Comments can be placed at any position of any line. Anything before # sign will be executed, anything after # sign will be ignored.


              
1

            
print("Hello, world!") # Comments can be very helpful
copy

You can switch certain lines of code off by just placing a # sign (turning it into a comment).


              
12

            
# print("Hello, Mary!")
print("Hello, Jane!")
copy
Aufgabe

Swipe to start coding

Switch off second ling of code by turning it into a comment.

Lösung

Switch to desktopWechseln Sie zum Desktop, um in der realen Welt zu übenFahren Sie dort fort, wo Sie sind, indem Sie eine der folgenden Optionen verwenden
War alles klar?

Wie können wir es verbessern?

Danke für Ihr Feedback!

Abschnitt 1. Kapitel 4
toggle bottom row

book
Comments

Before moving further, quick thing to learn: comments. Comment is a part of code which is not executed (ignored by the program). Comments are used as notes that developers leave for themselves or other users.

In Python there are single-line comments and multi-line comments (used less often).

Single-line comment start with symbol #. If placed at the beggining of the line entire line is ignored.


              
12

            
# this is a comment that I left as a note for myself
print("Hello, World!")
copy

Comments can be placed at any position of any line. Anything before # sign will be executed, anything after # sign will be ignored.


              
1

            
print("Hello, world!") # Comments can be very helpful
copy

You can switch certain lines of code off by just placing a # sign (turning it into a comment).


              
12

            
# print("Hello, Mary!")
print("Hello, Jane!")
copy
Aufgabe

Swipe to start coding

Switch off second ling of code by turning it into a comment.

Lösung

Switch to desktopWechseln Sie zum Desktop, um in der realen Welt zu übenFahren Sie dort fort, wo Sie sind, indem Sie eine der folgenden Optionen verwenden
War alles klar?

Wie können wir es verbessern?

Danke für Ihr Feedback!

Abschnitt 1. Kapitel 4
Switch to desktopWechseln Sie zum Desktop, um in der realen Welt zu übenFahren Sie dort fort, wo Sie sind, indem Sie eine der folgenden Optionen verwenden
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