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Python Built-In Functions: A Comprehensive Guide

Python is a popular programming language that has a multitude of functions built into its core. These functions are known as built-in functions and provide programmers with a wide range of tools for developing efficient and high-quality code.

In this article, we will take a closer look at some of the most commonly used built-in functions in Python and how they can be used to enhance your coding experience.

Mathematical Functions

Python has a rich set of mathematical functions that can be used for a variety of purposes, from simple arithmetic operations to complex mathematical calculations.

Some of the most commonly used mathematical functions include:

• abs(x) – Returns the absolute value of x.
• pow(x,y) – Returns x raised to the power of y.
• round(x,n) – Rounds the floating-point value x to n decimal places.
• max(arg1,arg2) – Returns the largest of two arguments.
• min(arg1,arg2) – Returns the smallest of two arguments.

String Functions

Strings are an essential part of Python programming, and the language provides an extensive set of string functions to work with them.

Some of the most commonly used string functions include:

• len(string) – Returns the length of the string.
• str.upper() – Converts the string to uppercase.
• str.lower() – Converts the string to lowercase.
• str.split(separator) – Splits a string into a list based on the separator.
• str.strip() – Removes any whitespace from the beginning or end of a string.

List Functions

Lists are one of the primary data structures in Python, and the language provides a vast set of built-in functions to work with them.

Some of the most commonly used list functions include:

• len(list) – Returns the length of the list.
• list.append(item) – Adds an item to the end of the list.
• list.sort() – Sorts the items in the list in ascending order.
• list.reverse() – Reverses the order of the items in the list.
• list.pop(index) – Removes and returns the item at the specified index.

Dictionary Functions

Dictionaries are another essential part of Python programming, and the language provides an extensive set of dictionary functions to work with them.

Some of the most commonly used dictionary functions include:

• len(dict) – Returns the number of key-value pairs in the dictionary.
• dict.keys() – Returns a list of all the keys in the dictionary.
• dict.values() – Returns a list of all the values in the dictionary.
• dict.items() – Returns a list of all the key-value pairs in the dictionary.
• dict.get(key, default) – Returns the value associated with the specified key or the default value if the key is not found.

Conclusion

Python’s built-in functions are a powerful toolset that provides programmers with a wide range of tools to write efficient and high-quality code. Whether you are working with mathematics, text, lists, or dictionaries, Python’s built-in functions can help you achieve your coding goals quickly and easily.

This list provides just a small sample of Python’s built-in functions, but there are many more to discover. So, go out there, explore, and leverage Python’s built-in functions to take your coding skills to the next level!

最后的最后

本文由chatgpt生成，文章没有在chatgpt生成的基础上进行任何的修改。以上只是chatgpt能力的冰山一角。作为通用的Aigc大模型，只是展现它原本的实力。

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