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Get statistics for each group (such as count, mean, etc) using pandas GroupBy?
... a MultiIndexed columned dataframe).
You also get different statistics for string data. Here's an example,
df2 = df.assign(D=list('aaabbccc')).sample(n=100, replace=True)
with pd.option_context('precision', 2):
display(df2.groupby(['A', 'B'])
.describe(include='all')
...
.bashrc/.profile is not loaded on new tmux session (or window) — why?
... ~/.bashrc.
default-command shell-command
The default is an empty string, which instructs tmux to create a login shell using the value of the default-shell option.
Init files for Bash,
login mode:
/etc/profile
~/.bash_profile, ~/.bash_login, ~/.profile (only first one that exists)
in...
Where to define custom error types in Ruby and/or Rails?
...
Some heirarchy can be helpful - namespaces are good at keeping redundant strings out of type names - but that's more a matter of taste - there's no need to go overboard provided you have at least one custom exception type in your app which you use throughout to differentiate between 'intentional' ...
Java Persistence / JPA: @Column vs @Basic
... basic attribute is one where the attribute class is a simple type such as String, Number, Date or a primitive. A basic attribute's value can map directly to the column value in the database.
The types and conversions supported depend on the JPA implementation and database platform. Any basic attri...
Getting root permissions on a file inside of vi? [closed]
...ke prompt that appears after running the :! command.
exec[ute] executes a string as a command. We can't just run :write because it won't process the necessary function call.
! represents the :! command: the only command that :write accepts. Normally, :write accepts a file path to which to write....
How do I change the formatting of numbers on an axis with ggplot?
...n Diggs.
fancy_scientific <- function(l) {
# turn in to character string in scientific notation
l <- format(l, scientific = TRUE)
# quote the part before the exponent to keep all the digits
l <- gsub("^(.*)e", "'\\1'e", l)
# turn the 'e+' into plotmath format
...
Reset C int array to zero : the fastest way?
...
memset (from <string.h>) is probably the fastest standard way, since it's usually a routine written directly in assembly and optimized by hand.
memset(myarray, 0, sizeof(myarray)); // for automatically-allocated arrays
memset(myarray, ...
Should switch statements always contain a default clause?
...
There's no reason to include more information than just the "unreachable" string; if it actually happens, you're going to need to look at the source and the values of the variables etc anyway, and the exception stacktrace will include that line number, so no need to waste your time writing more tex...
A type for Date only in C# - why is there no Date type?
...e and result must be of type Date - if it was Date type result expected as string without time. For example Delphi also have Date as DateTime, but typeinfo different for Date and DateTime.
– user2091150
Jul 18 '18 at 11:45
...
How can I check that a form field is prefilled correctly using capybara?
...elected answer because the error message shows you the expected and actual strings. This gives the unhelpful "expected field "my field" to return something" error. But this one does definitely read better and follows the page matcher API better. Upvotes all around!!!
– mraaronc...