Python for Data Analysts

30-day roadmap to learn Python up to an intermediate level Week 1: Python Basics *Day 1-2:* - Learn about Python, its syntax, and how to install Python on your computer. - Write your first "Hello, World!" program. - Understand variables and data types (integers, floats, strings). *Day 3-4:* - Explore basic operations (arithmetic, string concatenation). - Learn about user input and how to use the input() function. - Practice creating and using variables. *Day 5-7:* - Dive into control flow with if statements, else statements, and loops (for and while). - Work on simple programs that involve conditions and loops. Week 2: Functions and Modules *Day 8-9:* - Study functions and how to define your own functions using def. - Learn about function arguments and return values. *Day 10-12:* - Explore built-in functions and libraries (e.g., len(), random, math). - Understand how to import modules and use their functions. *Day 13-14:* - Practice writing functions for common tasks. - Create a small project that utilizes functions and modules. Week 3: Data Structures *Day 15-17:* - Learn about lists and their operations (slicing, appending, removing). - Understand how to work with lists of different data types. *Day 18-19:* - Study dictionaries and their key-value pairs. - Practice manipulating dictionary data. *Day 20-21:* - Explore tuples and sets. - Understand when and how to use each data structure. Week 4: Intermediate Topics *Day 22-23:* - Study file handling and how to read/write files in Python. - Work on projects involving file operations. *Day 24-26:* - Learn about exceptions and error handling. - Explore object-oriented programming (classes and objects). *Day 27-28:* - Dive into more advanced topics like list comprehensions and generators. - Study Python's built-in libraries for web development (e.g., requests). *Day 29-30:* - Explore additional libraries and frameworks relevant to your interests (e.g., NumPy for data analysis, Flask for web development, or Pygame for game development). - Work on a more complex project that combines your knowledge from the past weeks. Throughout the 30 days, practice coding daily, and don't hesitate to explore Python's documentation and online resources for additional help. You can refer this guide to help you with interview preparation. Good luck with your Python journey 😄👍

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DSA in Python ✅

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You don't need to know everything about every data tool. Focus on what will help land you your job. For Excel: - IFS (all variations) - XLOOKUP - IMPORTRANGE (in GSheets) - Pivot Tables - Dynamic functions like TODAY() For SQL: - Sum - Group By - Window Functions - CTEs - Joins For Tableau: - Calculated Columns - Sets - Groups - Formatting For Power BI: - Power Query for data transformation - DAX (Data Analysis Expressions) for creating custom calculations - Relationships between tables - Creating interactive and dynamic dashboards - Utilizing slicers and filters effectively I have created 100-Day Roadmap & Resources for Data Analyst 👇👇 https://whatsapp.com/channel/0029VaGgzAk72WTmQFERKh02 Hope it helps :)

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Python for Data Analysis: Roadmap

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10 Pandas (python) functions I used the most as a Data Analyst👇 1/ read_csv(): Reads data from a CSV file. 2/ head(): Displays the first few rows of a df. 3/ info(): Provides metadata about the df. 4/ describe(): Offers statistics. 5/ groupby(): Groups data. 6/ merge(): Combines dfs using a common column. 7/ drop_duplicates(): Removes duplicate rows. 8/ isna(): Checks for missing values. 9/ drop(): Removes specified rows or columns. 10/ apply(): Applies a custom function to df. Join for more: t.me/pythonanalyst

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Frequently asked Python practice questions and answers in Data Analyst Interview: 1.Temperature Conversion: Write a program that converts a given temperature from Celsius to Fahrenheit or from Fahrenheit to Celsius based on user input. temp = float(input('Enter the temperature: ')) unit = input('Enter the unit (C/F): ').upper() if unit == 'C': converted = (temp * 9/5) + 32 print(f'Temperature in Fahrenheit: {converted}') elif unit == 'F': converted = (temp - 32) * 5/9 print(f'Temperature in Celsius: {converted}') else: print('Invalid unit') 2.Multiplication Table: Write a program that prints the multiplication table of a given number using a while loop. num = int(input('Enter a number: ')) i = 1 while i <= 10: print(f'{num} x {i} = {num * i}') i += 1 3.Greatest of Three Numbers: Write a program that takes three numbers as input and prints the greatest of the three. num1 = float(input('Enter first number: ')) num2 = float(input('Enter second number: ')) num3 = float(input('Enter third number: ')) if num1 >= num2 and num1 >= num3: print(f'The greatest number is {num1}') elif num2 >= num1 and num2 >= num3: print(f'The greatest number is {num2}') else: print(f'The greatest number is {num3}') 4.Sum of Even Numbers: Write a program that calculates the sum of all even numbers between 1 and a given number using a while loop. num = int(input('Enter a number: ')) total = 0 i = 2 while i <= num: total += i i += 2 print(f'The sum of even numbers up to {num} is {total}') 5.Check Armstrong Number: Write a program that checks if a given number is an Armstrong number. num = int(input('Enter a number: ')) sum_of_digits = 0 original_num = num while num > 0: digit = num % 10 sum_of_digits += digit ** 3 num //= 10 if sum_of_digits == original_num: print(f'{original_num} is an Armstrong number') else: print(f'{original_num} is not an Armstrong number') 6.Reverse a Number: Write a program that reverses the digits of a given number using a while loop. num = int(input('Enter a number: ')) reversed_num = 0 while num > 0: digit = num % 10 reversed_num = reversed_num * 10 + digit num //= 10 print(f'The reversed number is {reversed_num}') 7.Count Vowels and Consonants: Write a program that counts the number of vowels and consonants in a given string. string = input('Enter a string: ').lower() vowels = 'aeiou' vowel_count = 0 consonant_count = 0 for char in string: if char.isalpha(): if char in vowels: vowel_count += 1 else: consonant_count += 1 print(f'Number of vowels: {vowel_count}') print(f'Number of consonants: {consonant_count}') Python Interview Q&A: https://topmate.io/coding/898340 Like for more ❤️ ENJOY LEARNING 👍👍

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COMMON TERMINOLOGIES IN PYTHON - PART 1 Have you ever gotten into a discussion with a programmer before? Did you find some of the Terminologies mentioned strange or you didn't fully understand them? In this series, we would be looking at the common Terminologies in python. It is important to know these Terminologies to be able to professionally/properly explain your codes to people and/or to be able to understand what people say in an instant when these codes are mentioned. Below are a few: IDLE (Integrated Development and Learning Environment) - this is an environment that allows you to easily write Python code. IDLE can be used to execute a single statements and create, modify, and execute Python scripts. Python Shell - This is the interactive environment that allows you to type in python code and execute them immediately System Python - This is the version of python that comes with your operating system Prompt - usually represented by the symbol ">>>" and it simply means that python is waiting for you to give it some instructions REPL (Read-Evaluate-Print-Loop) - this refers to the sequence of events in your interactive window in form of a loop (python reads the code inputted>the code is evaluated>output is printed) Argument - this is a value that is passed to a function when called eg print("Hello World")... "Hello World" is the argument that is being passed. Function - this is a code that takes some input, known as arguments, processes that input and produces an output called a return value. E.g print("Hello World")... print is the function Return Value - this is the value that a function returns to the calling script or function when it completes its task (in other words, Output). E.g. >>> print("Hello World") Hello World Where Hello World is your return value. Note: A return value can be any of these variable types: handle, integer, object, or string Script - This is a file where you store your python code in a text file and execute all of the code with a single command Script files - this is a file containing a group of python scripts

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