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how to create a file name with the current date & time in python?
... @rwbyrd That is odd, I just tried those exact 3 lines (copy-paste) with Python 3.4.1 and 2.7.6 and it works - though with Python 3 you need to use print(timestr). Did you copy this text from above? Perhaps a typo otherwise?
– Levon
Aug 25 '15 at 15:46
...
How can I check if character in a string is a letter? (Python)
...nt from the “Alphabetic” property defined in the Unicode Standard.
In python2.x:
>>> s = u'a1中文'
>>> for char in s: print char, char.isalpha()
...
a True
1 False
中 True
文 True
>>> s = 'a1中文'
>>> for char in s: print char, char.isalpha()
...
a Tru...
Examples of GoF Design Patterns in Java's core libraries
...hich in turn can be used to create another abstract/interface type)
javax.xml.parsers.DocumentBuilderFactory#newInstance()
javax.xml.transform.TransformerFactory#newInstance()
javax.xml.xpath.XPathFactory#newInstance()
Builder (recognizeable by creational methods returning the instance itself)
ja...
Get last n lines of a file, similar to tail
... If you use lower-level I/O, then you might see a speedup.
UPDATE
for Python 3.2 and up, follow the process on bytes as In text files (those opened without a "b" in the mode string), only seeks relative to the beginning of the file are allowed (the exception being seeking to the very file end w...
How to sort a dataFrame in python pandas by two or more columns?
...2f%2fstackoverflow.com%2fquestions%2f17141558%2fhow-to-sort-a-dataframe-in-python-pandas-by-two-or-more-columns%23new-answer', 'question_page');
}
);
Post as a guest
...
Localization of DisplayNameAttribute
...C#" #>
<#@ output extension=".cs" #>
<#@ assembly name="System.Xml.dll" #>
<#@ import namespace="System.Xml" #>
<#@ import namespace="System.Xml.XPath" #>
using System;
using System.ComponentModel;
namespace Bear.Client
{
/// <summary>
/// Localized display name ...
If list index exists, do X
...
In Python negative indexes on lists just count backwards from the end of the list. So they could not exist in a way that impacts the length of the list.
– JonathanV
Aug 7 '19 at 18:00
...
How to generate random number with the specific length in python
...an just do it as a oneliner:
'{:03}'.format(random.randrange(1, 10**3))
python 3.6+ only oneliner:
f'{random.randrange(1, 10**3):03}'
Example outputs of the above are:
'026'
'255'
'512'
Implemented as a function:
import random
def n_len_rand(len_, floor=1):
top = 10**len_
if flo...
In Python, what is the difference between “.append()” and “+= []”?
...or your case the only difference is performance: append is twice as fast.
Python 3.0 (r30:67507, Dec 3 2008, 20:14:27) [MSC v.1500 32 bit (Intel)] on win32
Type "help", "copyright", "credits" or "license" for more information.
>>> import timeit
>>> timeit.Timer('s.append("somethi...
How to “comment-out” (add comment) in a batch/cmd?
I have a batch file that runs several python scripts that do table modifications.
10 Answers
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