无意间想到的一个需求，然后就顺手写了写，留下来，方便以后用

列表版：(基本没用，仅提供思路，字典版稍微改动可以直接用)

大体需求：

把重复的文件名进行改名，达到浏览器下载相同文件的效果

下载完成后再把文件夹和目录名删掉

import os

import zipfile

import shutil

import re

def make_zip(source_dir, output_filename):

zipf = zipfile.ZipFile(output_filename, 'w', zipfile.ZIP_DEFLATED)

pre_len = len(os.path.dirname(source_dir))

for parent, dirnames, filenames in os.walk(source_dir):

for filename in filenames:

pathfile = os.path.join(parent, filename)

arcname = pathfile[pre_len:].strip(os.path.sep) # 相对路径

zipf.write(pathfile, arcname)

zipf.close()

dir_name = "files"

os.makedirs(dir_name)

file_names = ["文件1","文件2","文件1","文件1","文件1","wenjian1"]

file_names_sorted = sorted(file_names)

file_new_names = []

prog = re.compile(r".*\((\d+)\)$")

for file_name in file_names_sorted:

if file_name in file_new_names:

if prog.match(file_new_names[-1]):

file_name = file_name + "(%s)" % (int(prog.match(file_new_names[-1]).group(1))+1)

else:

file_name = file_name + "(1)"

file_new_names.append(file_name)

for file_new_name in file_new_names:

file_path = os.path.join(dir_name, file_new_name)

with open(file_path+'.py', mode="w", encoding="utf-8")as f:

f.write("print('hello world!')")

shutil.rmtree("files")

os.remove("files")

字典版：

关键问题：tornado提供下载，对重复的文件名进行重命名(和浏览器类似)

import os

import zipfile

import shutil

import re

import tornado.web

class FileDownLoadHandler(tornado.web.RequestHandler):

def post(self, *args, **kwargs):

def make_zip(source_dir, output_filename):

zipf = zipfile.ZipFile(output_filename, 'w', zipfile.ZIP_DEFLATED)

pre_len = len(os.path.dirname(source_dir))

for parent, dirnames, filenames in os.walk(source_dir):

for filename in filenames:

pathfile = os.path.join(parent, filename)

arcname = pathfile[pre_len:].strip(os.path.sep) # 相对路径

zipf.write(pathfile, arcname)

zipf.close()

# dir_name和file_infos都应该从数据库取

dir_name = "新建文件夹"

os.makedirs(dir_name)

file_infos = [{'file_content': 'print("Hello World!")', 'file_name': '文件1'},

{'file_content': 'print("Hello World!")', 'file_name': '文件2'},

{'file_content': 'print("Hello World!")', 'file_name': '文件1'}]

print(file_infos)

file_infos_sorted = sorted(file_infos, key=lambda item: item["file_name"])

prog = re.compile(r".*\((\d+)\)$")

print(file_infos_sorted)

file_new_infos = []

file_names_set = set()

for file_info in file_infos_sorted:

if file_info["file_name"] in file_names_set:

if prog.match(file_new_infos[-1]["file_name"]):

file_info["file_name"] = file_info["file_name"] + "(%s)" % (

int(prog.match(file_new_infos[-1]["file_name"]).group(1)) + 1)

else:

file_info["file_name"] = file_info["file_name"] + "(1)"

else:

file_names_set.add(file_info["file_name"])

file_new_infos.append(file_info)

for file_new_info in file_new_infos:

file_path = os.path.join(dir_name, file_new_info["file_name"])

with open(file_path + ".py", mode="w", encoding="utf-8")as f:

f.write(file_new_info["file_content"])

target_name = dir_name + ".zip"

make_zip(dir_name, target_name) # 打包加压缩

# 下载

self.set_header('Content-Type', 'application/octet-stream')

self.set_header('Content-Disposition', ('attachment; filename=%s' % target_name).encode("utf-8"))

buf_size = 4096

with open(target_name, "rb")as f:

while True:

data = f.read(buf_size)

if not data:

break

self.write(data)

self.finish()

shutil.rmtree(dir_name)

os.remove(target_name)

才发现自己是真的菜，无意间问了一个java的同事，他们说Java可以直接写如zip流，然后找到了python的写入文件流的方式

deftest_zip(self):importzipfile, tempfile, ostry:

file_name= tempfile.mktemp(suffix=".zip") #mktemp方法慎用

with zipfile.ZipFile(file_name, 'w', zipfile.ZIP_DEFLATED) as zf:for i in range(5):

zf.writestr("文件名%s" % i, """print('文件内容')""")#这里接着就是下载逻辑了,和上面的一样,就不重复写了

finally:

os.remove(file_name)