「四舍五入」是小学就学过的数学知识，也是日常计算中经常会用到的处理方法。 然而让人没想到的是，一个简单的四舍五入操作，在Python里居然这么难搞，网上还一堆错误的教程。 来看这个例子，有一个变量a为1.135，现在希望把它保留2位小数，要怎么做？

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The CBSE Class 12 Computer Science exam for 2026 was successfully conducted today, March 25, 2026. The exam took place across various centers from 10:30 AM to 1:30 PM. To help students settle in, the ...

Machine learning is an essential component of artificial intelligence. Whether it’s powering recommendation engines, fraud detection systems, self-driving cars, generative AI, or any of the countless ...

String manipulation is a core skill for every Python developer. Whether you’re working with CSV files, log entries, or text analytics, knowing how to split strings in Python makes your code cleaner ...

Getting input from users is one of the first skills every Python programmer learns. Whether you’re building a console app, validating numeric data, or collecting values in a GUI, Python’s input() ...

Python’s new template strings, or t-strings, give you a much more powerful way to format data than the old-fashioned f-strings. The familiar formatted string, or f-string, feature in Python provides a ...

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One thing to note here is you can also use double triple quotes for multiline strings(""" """ like this). Do you remember I said(ok wrote) there is something called unassigned strings in this post?