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如何选择机器学习算法 - 大数据 & AI - 清泛网 - 专注C/C++及内核技术
...交叉验证中表现最好的。倘若你只是想针对你的问题寻找一个“足够好”的算法，或者一个起步点，这里给出了一些我觉得这些年用着还不错的常规指南。
How large is your training set?
训练集有多大？
If your training set is sm...
How to count the number of files in a directory using Python
...
os.listdir() will be slightly more efficient than using glob.glob. To test if a filename is an ordinary file (and not a directory or other entity), use os.path.isfile():
import os, os.path
# simple version for working with...
python NameError: global name '__file__' is not defined
...
This error comes when you append this line os.path.join(os.path.dirname(__file__)) in python interactive shell.
Python Shell doesn't detect current file path in __file__ and it's related to your filepath in which you added this line
So you should write this line os...
How to use “/” (directory separator) in both Linux and Windows in Python?
...
Use os.path.join().
Example: os.path.join(pathfile,"output","log.txt").
In your code that would be: rootTree.write(os.path.join(pathfile,"output","log.txt"))
...
一分钟读懂低功耗蓝牙(BLE) MTU交换数据包 - 创客硬件开发 - 清泛IT社区，...
... * MTU: 最大传输单元（MAXIMUM TRANSMISSION UNIT） ， 指在一个PDU （Protocol Data Unit： 协议数据单元，在一个传输单元中的有效传输数据）能够传输的最大数据量（多少字节可以一次性传输到对方）。
* MTU 交换是为了在...
如何选择机器学习算法 - 大数据 & AI - 清泛网移动版 - 专注C/C++及内核技术
...交叉验证中表现最好的。倘若你只是想针对你的问题寻找一个“足够好”的算法，或者一个起步点，这里给出了一些我觉得这些年用着还不错的常规指南。
How large is your training set?
训练集有多大？
If your training set is sm...
How do I copy an entire directory of files into an existing directory using Python?
...standard shutil.copytree seems arbitrary and annoying. Workaround:
import os, shutil
def copytree(src, dst, symlinks=False, ignore=None):
for item in os.listdir(src):
s = os.path.join(src, item)
d = os.path.join(dst, item)
if os.path.isdir(s):
shutil.copytree...
OS detecting makefile
...different computers and several different operating systems, which are Mac OS X, Linux, or Solaris. For the project I'm working on, I pull my code from a remote git repository.
...
Find current directory and file's directory [duplicate]
... directory a Python file is contained in, write this in that file:
import os
dir_path = os.path.dirname(os.path.realpath(__file__))
(Note that the incantation above won't work if you've already used os.chdir() to change your current working directory, since the value of the __file__ constant is ...
How to get the parent dir location
...can only go as far as the root package, however. If this is a problem, use os.path.abspath: dirname(dirname(abspath(file))).
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