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How to pip or easy_install tkinter on Windows
...Well I can see two solutions here:
1) Follow the Docs-Tkinter install for Python (for Windows):
Tkinter (and, since Python 3.1, ttk) are included with all standard Python distributions. It is important that you use a version of Python supporting Tk 8.5 or greater, and ttk. We recommend installing...
Calculating a directory's size using Python?
...s anybody got a nice routine for calculating the size of a directory using Python? It would be very nice if the routine would format the size nicely in Mb/Gb etc.
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How to read a single character from the user?
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@Evan, that's because python is in line buffered mode by default
– John La Rooy
Oct 13 '09 at 11:09
3
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MongoDB副本集详解 优于以往的主从模式 - 大数据 & AI - 清泛网 - 专注C/C++及内核技术
...为MongoDB使用内存映射文件,所以必须使用64位版本。官方下载地址如下：http: www mongodb org downloads实验环境使用的Mongodb版本为mon 因为MongoDB使用内存映射文件,所以必须使用64位版本。
官方下载地址如下：http://www.mongodb.org/downloads...
Python: Making a beep noise
... me a beeping noise. I'm on a windows machine. I've looked at http://docs.python.org/library/winsound.html
9 Answers
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Python os.path.join on Windows
I am trying to learn python and am making a program that will output a script. I want to use os.path.join, but am pretty confused. According to the docs if I say:
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Python subprocess.Popen “OSError: [Errno 12] Cannot allocate memory”
... that every time you call it you're requesting once more as much memory as Python is already eating up, i.e. in the hundreds of additional MB, all in order to then exec a puny 10kB executable such as free or ps. In the case of an unfavourable overcommit policy, you'll soon see ENOMEM.
Alternatives...
bash: pip: command not found
I downloaded pip and ran python setup.py install and everything worked just fine. The very next step in the tutorial is to run pip install <lib you want> but before it even tries to find anything online I get an error "bash: pip: command not found".
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Command to get time in milliseconds
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date command didnt provide milli seconds on OS X, so used an alias from python
millis(){ python -c "import time; print(int(time.time()*1000))"; }
OR
alias millis='python -c "import time; print(int(time.time()*1000))"'
EDIT: following the comment from @CharlesDuffy.
Forking any child process t...
How to install psycopg2 with “pip” on Python?
...hes.
Option 1
Install the psycopg2-binary PyPI package instead, it has Python wheels for Linux and Mac OS.
pip install psycopg2-binary
Option 2
Install the prerequsisites for building the psycopg2 package from source:
Debian/Ubuntu
Python 3
sudo apt install libpq-dev python3-dev
You m...