利用python管理系统、文件和应用程序，自动化执行，提高工作效率。查找文件需要导入自带的os模块，re模块用于正则匹配。import os
import re
def find(pattern, path='.', file_only=False, dir_only=False):
'''
递归查找指定路径下符合要求的文件和（或）路径。
'''
res = []
for root, dirs, files in os.walk(path)...
import numpy as np
import pandas as pd
import matplotlib.pyplot as plt
import seaborn as snsIn [28]:crash_df=sns.load_dataset("car_crashes")In [20]:crash_df.head()Out[20]:totalspeedingalcoholnot_distractedno_previousins_premiumins_lossesabbrev018.87....
韦恩图 Venn
venn 图可用于统计多个样品中所共有和独有的OTU 数目，可以比较直观的表现环境样品的OTU 数目组成相似性及重叠情况。通常情况下，分析时选用相似水平为97%的OTU 样品表。
参考文献：
Fouts DE, Szpakowski S, Purushe J, Torralba M, Waterman RC, et al. (2012) Next Generation
Sequencing to Define Prokaryotic and Fungal Diversit...
DNA sequencing as initially valued for revealing the DNA content of a cell. It may come as a surprise to many, however, that the most significant promise for the future of bioinformatics might lie in other applications. In general, most bioinformatics ...
