Web Frameworks in Python 👆

Python Libraries for Generative AI

Python For Everything!🐍

Python, the versatile language, can be combined with various libraries to build amazing things:🚀

1. Python + Pandas = Data Manipulation
2. Python + Scikit-Learn = Machine Learning
3. Python + TensorFlow = Deep Learning
4. Python + Matplotlib = Data Visualization
5. Python + Seaborn = Advanced Visualization
6. Python + Flask = Web Development
7. Python + Pygame = Game Development
8. Python + Kivy = Mobile App Development

#Python

Python Methods

Python for everything 👆

For data analysts working with Python, mastering these top 10 concepts is essential:

1. Data Structures: Understand fundamental data structures like lists, dictionaries, tuples, and sets, as well as libraries like NumPy and Pandas for more advanced data manipulation.

2. Data Cleaning and Preprocessing: Learn techniques for cleaning and preprocessing data, including handling missing values, removing duplicates, and standardizing data formats.

3. Exploratory Data Analysis (EDA): Use libraries like Pandas, Matplotlib, and Seaborn to perform EDA, visualize data distributions, identify patterns, and explore relationships between variables.

4. Data Visualization: Master visualization libraries such as Matplotlib, Seaborn, and Plotly to create various plots and charts for effective data communication and storytelling.

5. Statistical Analysis: Gain proficiency in statistical concepts and methods for analyzing data distributions, conducting hypothesis tests, and deriving insights from data.

6. Machine Learning Basics: Familiarize yourself with machine learning algorithms and techniques for regression, classification, clustering, and dimensionality reduction using libraries like Scikit-learn.

7. Data Manipulation with Pandas: Learn advanced data manipulation techniques using Pandas, including merging, grouping, pivoting, and reshaping datasets.

8. Data Wrangling with Regular Expressions: Understand how to use regular expressions (regex) in Python to extract, clean, and manipulate text data efficiently.

9. SQL and Database Integration: Acquire basic SQL skills for querying databases directly from Python using libraries like SQLAlchemy or integrating with databases such as SQLite or MySQL.

10. Web Scraping and API Integration: Explore methods for retrieving data from websites using web scraping libraries like BeautifulSoup or interacting with APIs to access and analyze data from various sources.

Give credits while sharing: https://news.1rj.ru/str/pythonanalyst

ENJOY LEARNING 👍👍

👉 List comprehensions: List comprehension offers a shorter syntax when you want to create a new list based on the values of an existing list.

Example:
Based on a list of fruits, you want a new list, containing only the fruits with the letter "a" in the name.
Without list comprehension you will have to write a for statement with a conditional test inside:

fruits = ["apple", "banana", "cherry", "kiwi", "mango"]
newlist = []

for x in fruits:
  if "a" in x:
    newlist.append(x)

print(newlist)

With list comprehension you can do all that with only one line of code:

fruits = ["apple", "banana", "cherry", "kiwi", "mango"]

newlist = [x for x in fruits if "a" in x]

print(newlist)

Python Detailed Roadmap 🚀

📌 1. Basics
◼ Data Types & Variables
◼ Operators & Expressions
◼ Control Flow (if, loops)

📌 2. Functions & Modules
◼ Defining Functions
◼ Lambda Functions
◼ Importing & Creating Modules

📌 3. File Handling
◼ Reading & Writing Files
◼ Working with CSV & JSON

📌 4. Object-Oriented Programming (OOP)
◼ Classes & Objects
◼ Inheritance & Polymorphism
◼ Encapsulation

📌 5. Exception Handling
◼ Try-Except Blocks
◼ Custom Exceptions

📌 6. Advanced Python Concepts
◼ List & Dictionary Comprehensions
◼ Generators & Iterators
◼ Decorators

📌 7. Essential Libraries
◼ NumPy (Arrays & Computations)
◼ Pandas (Data Analysis)
◼ Matplotlib & Seaborn (Visualization)

📌 8. Web Development & APIs
◼ Web Scraping (BeautifulSoup, Scrapy)
◼ API Integration (Requests)
◼ Flask & Django (Backend Development)

📌 9. Automation & Scripting
◼ Automating Tasks with Python
◼ Working with Selenium & PyAutoGUI

📌 10. Data Science & Machine Learning
◼ Data Cleaning & Preprocessing
◼ Scikit-Learn (ML Algorithms)
◼ TensorFlow & PyTorch (Deep Learning)

📌 11. Projects
◼ Build Real-World Applications
◼ Showcase on GitHub

📌 12. ✅ Apply for Jobs
◼ Strengthen Resume & Portfolio
◼ Prepare for Technical Interviews

Like for more ❤️💪

Here's a list of 20 valuable built-in Python functions and methods that shorten your code and improve its efficiency.

1. reduce()

Python's reduce() function iterates over each item in a list, or any other iterable data type, and returns a single value. It's one of the methods of the built-in functools class of Python.

Here's an example of how to use reduce:

from functools import reduce
def add_num(a, b):
    return a+b
a = [1, 2, 3, 10]
print(reduce(add_num, a))

Output: 16

You can also format a list of strings using the reduce() function:

from functools import reduce
def add_str(a,b):
 return a+' '+b
a = ['MUO', 'is', 'a', 'media', 'website']
print(reduce(add_str, a))

Output: MUO is a media website

2. split()

The split() function breaks a string based on set criteria. You can use it to split a string value from a web form. Or you can even use it to count the number of words in a piece of text.

The example code below splits a list wherever there's a space:

words = "column1 column2 column3"
words = words.split(" ")
print(words)

Output: ['column1', 'column2', 'column3']

3. enumerate()

The enumerate() function returns the length of an iterable and loops through its items simultaneously. Thus, while printing each item in an iterable data type, it simultaneously outputs its index.

Assume that you want a user to see the list of items available in your database. You can pass them into a list and use the enumerate() function to return this as a numbered list.

Here's how you can achieve this using the enumerate() method:

fruits = ["grape", "apple", "mango"]
for i, j in enumerate(fruits):
 print(i, j)

Output:
0 grape
1 apple
2 mango

Whereas, you might've wasted valuable time using the following method to achieve this:

fruits = ["grape", "apple", "mango"]
for i in range(len(fruits)):
 print(i, fruits[i])

In addition to being faster, enumerating the list lets you customize how your numbered items come through.

In essence, you can decide to start numbering from one instead of zero, by including a start parameter:

for i, j in enumerate(fruits, start=1):
 print(i, j)

Output:
1 grape
2 apple
3 mango

4. eval()

Python's eval() function lets you perform mathematical operations on integers or floats, even in their string forms. It's often helpful if a mathematical calculation is in a string format.

Here's how it works:

g = "(4 * 5)/4"
d = eval(g)
print(d)

Output: 5.0

5. round()

You can round up the result of a mathematical operation to a specific number of significant figures using round():

raw_average = (4+5+7/3)
rounded_average=round(raw_average, 2)
print("The raw average is:", raw_average)
print("The rounded average is:", rounded_average)

Output:
The raw average is: 11.333333333333334
The rounded average is: 11.33

6. max()

The max() function returns the highest ranked item in an iterable. Be careful not to confuse this with the most frequently occurring value, though.

Let's print the highest ranked value in the dictionary below using the max() function:

b = {1:"grape", 2:"apple", 3:"applesss", 4:"zebra", 5:"mango"}
print(max(b.values()))

Output: zebra

The code above ranks the items in the dictionary alphabetically and prints the last one.

Now use the max() function to see the largest integer in a list:

a = [1, 65, 7, 9]
print(max(a))

Output: 65

7. min()

The min() function does the opposite of what max() does:

fruits = ["grape", "apple", "applesss", "zebra", "mango"]
b = {1:"grape", 2:"apple", 3:"applesss", 4:"zebra", 5:"mango"}
a = [1, 65, 7, 9]
print(min(a))
print(min(b.values()))

Output:
1
apple