Pythonは辞書の2つのリストを比較します

リスト内で異なる辞書アイテムを印刷することもできます：

例：

if __name__ == '__main__':

    list_1 = [
        {'id': '123-abc', 'name': 'Mike', 'age': 40},
        {'id': '123-efg', 'name': 'John', 'age': 24},
        {'id': '123-xyz', 'name': 'Aly', 'age': 35}
    ]

    list_2 = [
        {'id': '123-abc', 'name': 'Mike', 'age': 40},
        {'id': '123-efg', 'name': 'Jon', 'age': 24},
        {'id': '123-xyz', 'name': 'Aly', 'age': 32}
    ]

    for i in list_1:
        if i not in list_2:
            print(i)

出力：

{'id': '123-efg', 'name': 'John', 'age': 24}
{'id': '123-xyz', 'name': 'Aly', 'age': 35}

上記のメソッドを作成する別の方法は次のとおりです。

def compare_two_lists(list1: list, list2: list) -> bool:
    """
    Compare two lists and logs the difference.
    :param list1: first list.
    :param list2: second list.
    :return:      if there is difference between both lists.
    """
    diff = [i for i in list1 + list2 if i not in list1 or i not in list2]
    result = len(diff) == 0
    if not result:
        print(f'There are {len(diff)} differences:\n{diff[:5]}')
    return result

PandasDataFrameを使用して2つのリストを変換する

以下のサンプルコードは、PandasDataFrameを使用して2つのリストを比較する方法を示しています

from pandas import DataFrame
import pandas as pd

def compare_two_lists(list1: list, list2: list) -> bool:
    """
    Compare two lists and logs the difference.
    :param list1: first list.
    :param list2: second list.
    :return:      if there is difference between both lists.
    """
    df1 = pd.DataFrame(list1)
    df2 = pd.DataFrame(list2)
    diff = dataframe_difference(df1, df2)
    result = len(diff) == 0
    if not result:
        print(f'There are {len(diff)} differences:\n{diff.head()}')
    return result

def dataframe_difference(df1: DataFrame, df2: DataFrame) -> DataFrame:
    """
    Find rows which are different between two DataFrames.
    :param df1: first dataframe.
    :param df2: second dataframe.
    :return:    if there is different between both dataframes.
    """
    comparison_df = df1.merge(df2, indicator=True, how='outer')
    diff_df = comparison_df[comparison_df['_merge'] != 'both']
    return diff_df