Python 将文件写入不存在的目录
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原文地址: http://stackoverflow.com/questions/23793987/
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Write file to a directory that doesn't exist
提问by Billz
How do I using with open() as f: ...to write the file in a directory that doesn't exist.
我如何使用with open() as f: ...将文件写入不存在的目录中。
For example:
例如：
with open('/Users/bill/output/output-text.txt', 'w') as file_to_write:
file_to_write.write("{}\n".format(result))
Let's say the /Users/bill/output/directory doesn't exist. If the directory doesn't exist just create the directory and write the file there.
假设该/Users/bill/output/目录不存在。如果目录不存在，只需创建目录并将文件写入那里。
采纳答案by Jonathon Reinhart
You need to first create the directory.
您需要先创建目录。
The mkdir -pimplementation from this answerwill do just what you want. mkdir -pwill create any parent directories as required, and silently do nothing if it already exists.
这个答案的mkdir -p实现将做你想要的。将根据需要创建任何父目录，如果它已经存在，则不执行任何操作。mkdir -p
Here I've implemented a safe_open_w()method which calls mkdir_pon the directory part of the path, before opening the file for writing:
在打开文件进行写入之前，我在这里实现了一个safe_open_w()调用mkdir_p路径的目录部分的方法：
import os, os.path
import errno
# Taken from https://stackoverflow.com/a/600612/119527
def mkdir_p(path):
try:
os.makedirs(path)
except OSError as exc: # Python >2.5
if exc.errno == errno.EEXIST and os.path.isdir(path):
pass
else: raise
def safe_open_w(path):
''' Open "path" for writing, creating any parent directories as needed.
'''
mkdir_p(os.path.dirname(path))
return open(path, 'w')
with safe_open_w('/Users/bill/output/output-text.txt') as f:
f.write(...)
回答by huu
Make liberal use of the osmodule:
自由使用os模块：
import os
if not os.path.isdir('/Users/bill/output'):
os.mkdir('/Users/bill/output')
with open('/Users/bill/output/output-text.txt', 'w') as file_to_write:
file_to_write.write("{}\n".format(result))
回答by Alex Gidan
You can just createthe path you want to create the file using os.makedirs:
你可以创建你想要用来创建文件的路径os.makedirs：
import os
import errno
def make_dir(path):
try:
os.makedirs(path, exist_ok=True) # Python>3.2
except TypeError:
try:
os.makedirs(path)
except OSError as exc: # Python >2.5
if exc.errno == errno.EEXIST and os.path.isdir(path):
pass
else: raise
Source: this SO solution
来源：这个SO 解决方案
回答by Yakir Tsuberi
For Python 3 can use with pathlib.Path:
对于 Python 3 可以与pathlib.Path 一起使用：
from pathlib import Path
p = Path('Users' / 'bill' / 'output')
p.mkdir(exist_ok=True)
(p / 'output-text.txt').open('w').write(...)
