str.join(sequence)#将序列中的元素以指定的字符连接生成一个新的字符串。 str.rfind(str, beg=0 end=len(string))# 返回字符串最后一次出现的位置,如果没有匹配项则返回-1。 str.replace(old, new[, max])#replace() 方法把字符串中的 old(旧字符串) 替换成 new(
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Real Python Python 3 Cheat Sheet说明书 Real Python:Python3Cheat Sheet
Get 50% off unlimited learning Buy Now Log inGet Started This Python cheat sheet is a handy reference with code samples for doing linear algebra with SciPy and interacting with NumPy. Karlijn Willems 5 min This handy one-page reference presents the Python basics that you need to do data scien...
NumPy Cheat Sheet - 用于数据科学的Python NumPy是一个使Python能够快速处理数据的库。NumPy最初于1995年以'Numeric'的形式推出,是许多重要的Python数据科学库的基础,包括Pandas,SciPy和scikit-learn。在第一次学习NumPy时很难记住你需要的所有函数和方法,而在Dataquest我们主张习惯于查阅NumPy文档,有时候很方便有一个...
In this cheat sheet, we use the following shorthand: arr | A NumPy Array object You’ll also need to import numpy to get started: import numpy as np Importing/exporting np.loadtxt(‘file.txt’) | From a text file np.genfromtxt(‘file.csv’,delimiter=’,’) | From a CSV file ...
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Keep this cheat sheet handy when you work on data sets. download the complete cheat sheet here:PDF Version If you like what you just read & want to continue your analytics learning,subscribe to our emails,follow us on twitteror join ourFacebook Group ...