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Update 01-数据读取与导出.md

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`@@ -111,6 +111,7 @@ df = pd.read_excel(r'D:\python\data.xlsx', index_col = 2) #指定行索引:将`
`111`	`111`	`df = pd.read_csv(r'D:\data.csv', encoding='utf-8', dtype={'col':str}) #指定某一列格式`
`112`	`112`	`df = pd.read_csv(r'C:\Users\文件\data.csv', encoding='utf-8', engine='python') #路径包含中文`
`113`	`113`	`df = pd.read_csv(r'D:\data.csv', sep=',') #指明分隔符号`
	`114`	`+df = pd.read_csv(r'D:\data.csv', header=None, error_bad_lines=False) #无列名,并跳过错误的行`
`114`	`115`	`df = pd.read_csv(r'D:\big_data.csv', \`
`115`	`116`	`skiprows = lambda x: x>0 and np.random.rand()>0.01) #先随机读取1%数据`
`116`	`117`

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