Data Files in Python In Python, a data file is a file that stores data. The data can be in many forms, such as text, binary, json, csv, etc. Python provides built-in functions to read from and write to data files. 1. Text Files These are the most common file that you’ll come across. They …
Creating a Custom Python Library: Step-by-Step Guide Step 1: Organize Your Code Into a Directory First, you need to organize your code. Let’s say you have some code for mathematical operations that you want to turn into a library. Start by creating a new directory for your library: mkdir my_math_lib Then, move into this new …
Commonly Used Python Libraries Type Library Description Data Analysis NumPy, Pandas Libraries for data manipulation and analysis. Visualization Matplotlib A library for creating static, animated, and interactive visualizations in Python. Scientific Computing SciPy A library used for technical and scientific computing. Machine Learning TensorFlow, Scikit-Learn Libraries for machine learning and data mining. Web Scraping Requests, …
Python Module A Python module is a .py file that contains Python code and can be imported into other Python scripts. This allows code to be reused across different programs and improves maintainability of a project. Simple example of Python module Suppose we have a file named math_ops.py: # math_ops.py def add(a, b): return a …
Creating and Using More Custom Python Modules Module 1: text_operations.py # text_operations.py def count_characters(text): return len(text) def convert_to_uppercase(text): return text.upper() def convert_to_lowercase(text): return text.lower() Module 2: list_operations.py # list_operations.py def get_first_element(lst): if len(lst) > 0: return lst[0] else: return “Error: The list is empty.” def get_last_element(lst): if len(lst) > 0: return lst[-1] else: return “Error: …
Creating and Using Custom Python Modules Module 1: calculations.py # calculations.py def add(x, y): return x + y def subtract(x, y): return x – y def multiply(x, y): return x * y def divide(x, y): if y != 0: return x / y else: return “Error: Division by zero is not allowed.” Module 2: greetings.py …
Python Modules Tutorial for Beginners 1. Importing a module import math 2. Using a function from a module import math print(math.sqrt(16)) # Output: 4.0 3. Using a constant from a module import math print(math.pi) # Output: 3.141592653589793 4. Importing only a specific item from a module from math import pi print(pi) # Output: 3.141592653589793 5. …
Python Modules Tutorial 1. Introduction to Modules A module is a file consisting of Python code. It can define functions, classes, and variables that you can use in your own Python scripts. You use the `import` statement to include the functionality from the module. import math 2. Accessing Module Functions You can access functions in …
Python Modules and Libraries Quiz 1. Given the following code snippet: import math print(math.pi) What will this code output? 2. Which Python library would you use if you need to work with dates and times? Write an example code snippet that uses this library to get the current date and time. 3. The following code …
Python Function Header In Python, a function header is the first part of a function definition. It starts with the keyword def, followed by the function name and parentheses () which may include parameters, and ends with a colon :. Example: def greet(name): print(f”Hello, {name}!”) In this example, greet is the function name and name …
