A python-playground
After a quick intro, we will jump into python code by example
Refreshing the basics
Python Command Line
// running Python using Command Line
touch helloworld.py
print("Hello, World!")
python helloworld.py
// The Python Command Line
python
print("Hello, World!")
exit()
Built-in utility
| Function | Description | Example |
|---|---|---|
help() |
Provides interactive help and documentation for Python objects and modules | help() or help(object) |
dir() |
Returns a list of names in the current local scope or a list of attributes of an object | dir() or dir(object) |
type() |
Returns the type of an object | type(42) -> <class 'int'> |
len() |
Returns the length of an object (such as a string, list, or tuple) | len('hello') -> 5 |
print() |
Prints the specified values to the standard output | print('Hello, World!') |
input() |
Reads a line from the standard input | name = input('Enter your name: ') |
range() |
Generates a sequence of numbers within a specified range | range(5) -> [0, 1, 2, 3, 4] |
open() |
Opens a file and returns a file object | file = open('example.txt', 'r') |
sum() |
Returns the sum of elements in an iterable | sum([1, 2, 3]) -> 6 |
sorted() |
Returns a sorted list from the elements of an iterable | sorted([3, 1, 4, 1, 5, 9, 2]) -> [1, 1, 2, 3, 4, 5, 9] |
max() |
Returns the largest item in an iterable or the largest of two or more arguments | max(3, 7, 1) -> 7 |
min() |
Returns the smallest item in an iterable or the smallest of two or more arguments | min(3, 7, 1) -> 1 |
abs() |
Returns the absolute value of a number | abs(-5) -> 5 |
round() |
Rounds a floating-point number to the nearest integer | round(3.14159) -> 3 |
input() |
Reads a line from the standard input | name = input('Enter your name: ') |
exit() |
Exits the Python interpreter | exit() |
Python Indentation
In Python, indentation is not just for readability; it is a syntactical element. The level of indentation determines the grouping of statements. Consistent indentation is essential for the code to be valid.
if condition:
# This block is indented
statement1
statement2
else:
# Another indented block
statement3
statement4
# Function to add two numbers
def example_function():
print("This is indented")
if True:
print("This is indented within the if block")
print("This is back to the outer indentation level")
# Call the function
example_function()
TOPICS
Collection Python Playgorund
Trinket playground
Programiz playground
Online-Python