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Is there a reason for C#'s reuse of the variable in a foreach?
...en moment in time (creation of a closure). This discusses similar stuff in Python and Scheme (cut for refs/vars and cute for keeping evaluated values in partially-evaluated closures).
– Will Ness
Jan 18 '12 at 18:09
...
Replace None with NaN in pandas dataframe
...
You can use DataFrame.fillna or Series.fillna which will replace the Python object None, not the string 'None'.
import pandas as pd
import numpy as np
For dataframe:
df = df.fillna(value=np.nan)
For column or series:
df.mycol.fillna(value=np.nan, inplace=True)
...
How do I create a directory from within Emacs?
...t create nonexistent parent directories.
Example:
C-x d *.py RET ; shows python source files in the CWD in `Dired` mode
+ test RET ; create `test` directory in the CWD
CWD stands for Current Working Directory.
or just create a new file with non-existing parent directories using C-x C-f and t...
How to round the minute of a datetime object
...verflow.com/questions/3463930/how-to-round-the-minute-of-a-datetime-object-python
"""
round_to = date_delta.total_seconds()
if dt is None:
dt = datetime.now()
seconds = (dt - dt.min).seconds
if seconds % round_to == 0 and dt.microsecond == 0:
rounding = (seconds ...
Generator Expressions vs. List Comprehension
...u use generator expressions and when should you use list comprehensions in Python?
9 Answers
...
What is the difference between buffer and cache memory in Linux?
...
I have tested this using a simple python program that writes large amounts of blocks. What happens is that the cache gets filled up as reported by free -w -h, not the buffers column. I think the cache column counts both disk writes and disk reads and buffers ...
How to change the playing speed of videos in HTML5?
... Hi @Armel, may I know where to put this code if I am using Selenium with Python?
– balandongiv
Apr 19 at 11:31
Hi @b...
Take the content of a list and append it to another list
...e for what you're trying to do.
A slightly shorter version which leans on Python to do more of the heavy lifting might be:
for logs in mydir:
for line in mylog:
#...if the conditions are met
list1.append(line)
if any(True for line in list1 if "string" in line):
li...
Find and replace string values in list
...
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Is there a range class in C++11 for use with range based for loops?
...e purpose except it is a run-time range, and the idea in my case came from Python. I considered a compile-time version, but in my humble opinion there is no real advantage to gain out the compile-time version. You can find the library on bitbucket, and it is under Boost License: Range. It is a one-h...