使用python获取多个excel第一列，汇总并去重数据到一个excel中

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import pandas as pd

# 读取多个Excel文件的第一列数据并汇总
path_list = ["file1.xlsx", "file2.xlsx", "file3.xlsx"]
df_list = []
for path in path_list:
    df = pd.read_excel(path)
    df_list.append(df.iloc[:, 0])
result = pd.concat(df_list)

# 将汇总的数据写入Excel文件的第一列
writer = pd.ExcelWriter("result.xlsx")
result.to_excel(writer, index=False, header=False, sheet_name="Sheet1")
writer.save()

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import pandas as pd

# 读取多个Excel文件的第一列数据并汇总
path_list = ["file1.xlsx", "file2.xlsx", "file3.xlsx"]
df_list = []
for path in path_list:
    df = pd.read_excel(path)
    df_list.append(df.iloc[:, 0])
result = pd.concat(df_list)

# 将汇总的数据写入Excel文件的第一列
writer = pd.ExcelWriter("result.xlsx")
result.to_excel