Python 熊猫在遍历目录时不会向dataframe添加列
每次运行时,我都会尝试通过遍历如下目录在dataframe中添加一列Python 熊猫在遍历目录时不会向dataframe添加列,python,excel,dataframe,loops,Python,Excel,Dataframe,Loops,每次运行时,我都会尝试通过遍历如下目录在dataframe中添加一列 import pandas as pd import os import sys ########generate file path 'getcwd: ', os.getcwd() osfile, maindir =('__file__: ', __file__) filename = os.path.basename(sys.argv[0]) inpath = maindir.replace(filena
import pandas as pd
import os
import sys
########generate file path
'getcwd: ', os.getcwd()
osfile, maindir =('__file__: ', __file__)
filename = os.path.basename(sys.argv[0])
inpath = maindir.replace(filename,"Excels")
outpath = maindir.replace(filename,"BulkFile.xlsx")
#########pandas script
def add_column():
for root, dirs, files in os.walk(inpath):
print(files)
for f in files:
path = os.path.join(root, f)
excelframe = pd.read_excel(path)
excelframe['full_name'] = excelframe['first_name'] + " " + excelframe['last_name']
dataframe = [excelframe]
compactframe = pd.concat(dataframe)
compactframe.to_excel(outpath)
它什么也不做,没有错误代码或其他什么,它什么也不做。
但是如果我不遍历一个目录并用这个替换这个脚本
import pandas as pd
import sys
import os
#####generate file path
osfile, maindir =('__file__: ', __file__)
filename = os.path.basename(sys.argv[0])
inpath = maindir.replace(filename,"BulkFile.xlsx")
outpath = maindir.replace(filename,"newfile.xlsx")
########pandas script
excelframe = pd.read_excel(inpath)
excelframe['full_name'] = excelframe['first_name'] + " " + excelframe['last_name']
dataframe = [excelframe]
compactframe = pd.concat(dataframe)
compactframe.to_excel(outpath)
它很好用。
有人知道为什么会这样,或者知道如何遍历目录并向数据帧添加列吗?您已经定义了函数
add\u column
,但还没有运行它。在要执行的第一个脚本末尾添加行Add_column()