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Why does csvwriter.writerow() put a comma after each character?
...e that behavior. I get 2016-11-05 13:21:11 without quotes. What version of Python are you using?
– Laurence Gonsalves
Nov 5 '16 at 20:26
|
s...
Pure JavaScript Send POST Data Without a Form
... data back from a POST request.
JS (put in static/hello.html to serve via Python):
<html><head><meta charset="utf-8"/></head><body>
Hello.
<script>
var xhr = new XMLHttpRequest();
xhr.open("POST", "/postman", true);
xhr.setRequestHeader('Content-Type', 'applic...
How to estimate how much memory a Pandas' DataFrame will need?
...a to the discussion.
I ran a series of tests on this issue.
By using the python resource package I got the memory usage of my process.
And by writing the csv into a StringIO buffer, I could easily measure the size of it in bytes.
I ran two experiments, each one creating 20 dataframes of increasi...
Django queries - id vs pk
...
id is also a built-in function in Python, I prefer to use pk because of that.
– Thierry Lam
Oct 23 '10 at 14:05
6
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Elasticsearch query to return all records
...
This is the best solution I found using python client
# Initialize the scroll
page = es.search(
index = 'yourIndex',
doc_type = 'yourType',
scroll = '2m',
search_type = 'scan',
size = 1000,
body = {
# Your query's body
})
sid = page['_scr...
How to calculate the angle between a line and the horizontal axis?
In a programming language (Python, C#, etc) I need to determine how to calculate the angle between a line and the horizontal axis?
...
Android - Pulling SQlite database android device
...is an invalid command. error, try the below.
dd if=data.ab bs=1 skip=24 | python -c "import zlib,sys;sys.stdout.write(zlib.decompress(sys.stdin.read()))" | tar -xvf -
The result is the apps/app.package.name/ folder containing application data, including sqlite database.
For more details you can ...
How to execute ipdb.set_trace() at will while running pytest tests
...ported anymore.
The solution is to run
pytest my_test.py --pdb --pdbcls=IPython.terminal.debugger:Pdb
From the help command:
pytest -h
--pdb start the interactive Python debugger on errors.
--pdbcls=modulename:classname
start a custom interactive Pytho...
Escaping regex string
...ort re
>>> re.escape('^a.*$')
'\\^a\\.\\*\\$'
If you are using a Python version < 3.7, this will escape non-alphanumerics that are not part of regular expression syntax as well.
If you are using a Python version < 3.7 but >= 3.3, this will escape non-alphanumerics that are not par...
Is there a difference between “raise exception()” and “raise exception” without parenthesis?
...can pass it arguments if needed).
The usual style that most people use in Python (i.e. in the standard library, in popular applications, and in many books) is to use raise MyException when there are no arguments. People only instantiate the exception directly when there some arguments need to be p...