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Large, persistent DataFrame in pandas
...., to an SQLite database step by step:
import pandas as pd
import sqlite3
from pandas.io import sql
import subprocess
# In and output file paths
in_csv = '../data/my_large.csv'
out_sqlite = '../data/my.sqlite'
table_name = 'my_table' # name for the SQLite database table
chunksize = 100000 # numbe...
My attempt at value initialization is interpreted as a function declaration, and why doesn't A a(())
...y, such declarations are stored in header files, however nothing stops you from writing them manually, if you know how the declaration of function looks like. The argument names are optional in declarations, so I omitted it in this example.
int putchar(int);
This allows you to write the code like...
How is Perl's @INC constructed? (aka What are all the ways of affecting where Perl modules are searc
...ommand line:
perl -Mlib=/dir1,/dir2
You can also remove the directories from @INC via no lib.
You can directly manipulate @INC as a regular Perl array.
Note: Since @INC is used during the compilation phase, this must be done inside of a BEGIN {} block, which precedes the use MyModule statement.
...
How to calculate the CPU usage of a process by PID in Linux from C?
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You need to parse out the data from /proc/<PID>/stat. These are the first few fields (from Documentation/filesystems/proc.txt in your kernel source):
Table 1-3: Contents of the stat files (as of 2.6.22-rc3)
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ScalaTest in sbt: is there a way to run a single test without tags?
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Just to clarify, if you run it from the command line, it should be as single argument: sbt "testOnly *MySuite -- -z foo"
– Sogartar
Jan 11 '17 at 17:17
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Installing specific package versions with pip
...ake another question please and post the error message that you're getting from pip.
– Mahmoud Abdelkader
Mar 8 '11 at 0:10
2
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How to use Python's pip to download and keep the zipped files for a package?
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pip install --download is deprecated. Starting from version 8.0.0 you should use pip download command:
pip download <package-name>
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How to use NSCache
...to make room.
If you can recreate those values at runtime (by downloading from the Internet, by doing calculations, whatever) then NSCache may suit your needs. If the data cannot be recreated (e.g. it's user input, it is time-sensitive, etc.) then you should not store it in an NSCache because it wi...
Difference between int32, int, int32_t, int8 and int8_t
...thing named int8 or int32 -- the latter (if they exist at all) is probably from some other header or library (most likely predates the addition of int8_t and int32_t in C99).
Plain int is quite a bit different from the others. Where int8_t and int32_t each have a specified size, int can be any size...
What is the difference between a cer, pvk, and pfx file?
...ge public and private objects in a single file. A pfx file can be created from .cer file. Can also be used to create a Software Publisher Certificate.
I summarized the info from the page based on the suggestion from the comments.
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