Python Write 写文件_pyspark write 怎么写成一个文件

Python 写文件是常用的操作，这里整理一下；

1. write txt

namelist=[]
namelist.append(input.item())
 
with open("namelist.txt", "w",encoding="utf-8") as f:
    for i in namelist:
        f.write(str(i)+'\n')

2 .write csv 表格；

fileNameID =0
def write_csv(fileNameID,filename,file_md5):
    # 表头
    header = ["序号", "名称", "MD5"]
 
    areas =[str(fileNameID) ,str(filename), str(file_md5)]
    with open('file_md5.csv', mode='a', encoding='utf_8_sig',newline="") as file_obj:
        # 1:创建writer对象
        writer = csv.writer(file_obj)
        # 2:写表头
        if fileNameID==0:
            writer.writerow(header)
        writer.writerow(areas)

例：计算目录下所有文件的MD5值

#计算目录下所有文件的MD5值
# coding:utf-8
import os
import hashlib
import csv
 
RootDir = './Release'
fileNameID =0
def write_csv(fileNameID,filename,file_md5):
    # 表头
    header = ["序号", "名称", "MD5"]
    # uheader = []
    # for i in header:
    #     uheader.append(i.encode("utf-8"))
    areas =[str(fileNameID) ,str(filename), str(file_md5)]
    with open('file_md5.csv', mode='a', encoding='utf_8_sig',newline="") as file_obj:
        # 1:创建writer对象
        writer = csv.writer(file_obj)
        # 2:写表头
        if fileNameID==0:
            writer.writerow(header)
        writer.writerow(areas)
 
def md5_test(dir):
    global fileNameID
    list_item = os.listdir(dir)
    for f in list_item:
        path = os.path.join(dir,f)
        if os.path.isdir(path):
            md5_test(path)
            #print(tuple_result[0],tuple_result[1])
        else:
            if path.endswith('.dll') or path.endswith('.exe'):
                with open(path,'rb') as fp:
                    data = fp.read()
                file_md5 = hashlib.md5(data).hexdigest()
                #print(fileNameID,',',f,',',file_md5)
                write_csv(fileNameID,f,file_md5)
 
            # else:
            #     print(fileNameID, ',', f, ',', file_md5)
            fileNameID += 1
            #return path,file_md5
 
if __name__ == '__main__':
    md5_test(RootDir)