Learn Python Coding
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Learn Python through simple, practical examples and real coding ideas. Clear explanations, useful snippets, and hands-on learning for anyone starting or improving their programming skills.

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✨ Unpacking the remaining elements 🧩

Sometimes you need to extract the first and last elements from a list, while grouping everything in the middle separately. Instead of struggling with slicing ([1:-1]), use the asterisk (*). ⭐️

data = ["CEO", "Middle Python Dev", "Junior Dev", "QA", "HR"]

# The asterisk automatically collects everything "extra" into a separate list.
boss, *team, hr = data

print(boss) # CEO
print(team) # ['Middle Python Dev', 'Junior Dev', 'QA']
print(hr) # HR

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How to check if a string is printable in Python 🀯

>>> "123".isprintable()
True

>>> "abc".isprintable()
True

>>> "\t
".isprintable()
False

# Python string method .isprintable()
>>> "123".isprintable()
True
>>> "abc".isprintable()
True
>>> "\t
".isprintable()
False

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collections.ChainMap β€” a built-in Python class that combines multiple dictionaries or other mappings into a single, updatable view. 🧠

Instead of merging dictionaries and creating new data structures in memory, it links them by reference, allowing you to search and manage them as a single entity. πŸ”—

# Example usage of collections.ChainMap
from collections import ChainMap

dict1 = {'a': 1, 'b': 2}
dict2 = {'b': 3, 'c': 4}
combined = ChainMap(dict1, dict2)
print(combined['b']) # Output: 2

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Function

pprint()
pprint()

is designed for pretty-printed, formatted output in Python. 🐍

It automatically formats complex data structures, such as nested lists, dictionaries, and tuples, by adding indentation and line breaks for improved readability. ✨

Features:
β€’ Supports customization of the output width for convenient formatting.
β€’ Includes depth and compact parameters to control the level of nesting and display compactness.
β€’ Available through the standard pprint module in the Python library. πŸ’»

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Python Tip 🐍

In Python, you can unpack both a string and a list using the same code. ✨

# Example usage
text = "abc"
lst = [1, 2, 3]
# Unpacking works similarly for both
a, b, c = text
x, y, z = lst

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The tell() function in Python 🐍

The tell() function returns the current position of the file pointer within the data stream. It is most often used when working with files. πŸ“‚

The function does not accept any arguments and returns an integer – the position in bytes from the beginning of the stream. πŸ”’

with open("file.txt", "rb") as f:
print(f.tell())

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Python is the #1 language in AI. 🐍

But you don’t need to learn all of it. (save this) πŸ“Œ

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