「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？ 网上搜索一下，找到两种方法： 第1种，round函数。第一个参数是原数字，第二个参数是要保留的小数位数 round(a, 2) 结果 1.14，没有问 ...

Use Power Query's M language to quickly fix names, remove hidden characters, extract numbers, and merge columns.

Are you ready for Python Pi? The 3.14 beta is out now, and we’ve got the rundown on what’s so great about it, including the new template strings feature, or “f-strings with superpowers.” ...

>>> def f(x: t"a{int}"): pass ... >>> import annotationlib >>> annotationlib.get_annotations(f, format=annotationlib.Format.STRING) {'x': "Template(strings=('a ...

The newly approved Python Enhancement Proposal 751 gives Python a standard lock file format for specifying the dependencies of projects. Here’s the what, why, and when. Python Enhancement Proposal ...

I read in the docs that Python string format mini language style syntax is available for widths, alignment, number prevision, etc. as well. I'm attempting to "align right" using the format specifier > ...