如何逐行比较两个数据框？

Question

我有 152431 X 15 形状的数据框，我想要两帧的差异

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# df1:
Date       Fruit  Num  Color 
2013-11-24 Banana 22.1 Yellow
2013-11-24 Orange  8.6 Orange
2013-11-24 Apple   7.6 Green
2013-11-24 Celery 10.2 Green

# df2:
Date       Fruit  Num  Color 
2013-11-24 Banana 22.1 Yellow
2013-11-24 Orange  8.6 Orange
2013-11-24 Apple   7.6 Green
2013-11-24 Celery 10.2 Green
2013-11-25 Apple  22.1 Red
2013-11-25 Orange  8.6 Orange

Answer 1

如果您的数据帧存储在两个文件中，我会在循环中读取每个文件的每一行并创建一个包含差异的列表：

old_file_path = 'INSERT_FILE_PATH_OF_FILE_A'
new_file_path = 'INSER_FILE_PATH_OF_FILE_B'

with open(old_file_path, 'r', encoding='utf-8') as old ,open(new_file_path, 'r', encoding='utf-8') as new:
    fileone = old.readlines()
    filetwo = new.readlines()

total_of_changes=[]
for line in filetwo:
    if line not in fileone:
        total_of_changes.append(line)