1.csv
cut price depth carat table
0 Good 327 57.9 0.23 65.0
1 Good 335 63.3 0.31 58.0
2 Very Good 336 62.8 0.24 57.0
3 Very Good 336 62.3 0.24 57.0
4 Very Good 337 61.9 0.26 55.0
5 Premium 326 59.8 0.21 61.0
6 Premium 334 62.4 0.29 58.0
7 Good 400 64.0 0.30 55.0
2.csv
cut price depth carat table
0 Good 327 57.9 0.23 65.0
1 Good 335 63.3 0.31 58.0
2 Very Good 336 62.8 0.24 57.0
3 Very Good 336 62.3 0.24 57.0
4 Very Good 337 61.9 0.26 50.0
5 Premium 326 59.8 0.21 61.0
6 Premium 334 60.4 0.29 58.0
7 Good 399 64.0 0.30 55.0
2.csv 中只有 4,6,7 行被更改
我想得到
像这样输出
cut price depth carat table
4 Very Good 337 61.9 0.26 50.0
6 Premium 334 60.4 0.29 58.0
7 Good 399 64.0 0.30 55.0
任何人都可以分享您的经验任何形式的帮助都可以
import pandas as pd
f1 = pd.read_csv('1.csv')
f2 = pd.read_csv('2.csv')
columns_list = ['cut', 'price', 'depth', 'carat', 'table']
new_df= f2[~f2.price.isin(f1.price)]
print(new_df)
这是我编写的示例代码,它工作正常,但我需要使用
f2[~f2.price.isin(f1.price)]
在一个循环中获取该“价格”空间上的每个列名称,这也将返回该值。我以这样的正常方式尝试过
for i in columns_list:
price = f2[~f2.i.isin(f1.i)]
print(price)
但是 pandas 命令不能像这样使用它会返回一个错误
AttributeError: 'DataFrame' object has no attribute 'i'
感谢阅读,希望你能理解