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How to write to an existing excel file without overwriting data (using pandas)?
...is already there
## and will create a new sheet.
writer.sheets = dict((ws.title, ws) for ws in book.worksheets)
data_filtered.to_excel(writer, "Main", cols=['Diff1', 'Diff2'])
writer.save()
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How to send an email using PHP?
...ders for August';
// message
$message = '
<html>
<head>
<title>Birthday Reminders for August</title>
</head>
<body>
<p>Here are the birthdays upcoming in August!</p>
<table>
<tr>
<th>Person</th><th>Day<...
Fastest way to convert an iterator to a list
... @Bachsau: Admittedly it's pretty good, but compare to Bash scripting where you can manipulate the current output by appending a pipe and another filter command strictly to the right of the current command. It sucks that for such a minor distinction (iterator vs materialized list) you...
Set TextView text from html-formatted string resource in XML
...esources>
<string name="somestring">
&lt;B&gt;Title&lt;/B&gt;&lt;BR/&gt;
Content
</string>
</resources>
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Create directories using make file
...T_O_DIR)/%.o: %.cpp
@mkdir -p $(@D)
@$(CC) -c $< -o $@
title: $(OBJS)
Then, you're effectively doing the same: create directories for all $(OBJS), but you'll do it in a less complicated way.
The same policy (files are targets, directories never are) is used in various applicat...
curl json post request via terminal to a rails app
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Hi I cam calling a script like this: abc.com/?a=4&b={"x":"y"}. Can you tell me what it would look like in curl terminal??
– user739711
Mar 21 '12 at 11:59
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Creating hidden arguments with Python argparse
...hon argparse.ArgumentParser without it showing up in the usage or help ( script.py --help )?
2 Answers
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Where do gems install?
...ng it correctly.
Proper gems are usually configured:
via an initializer script on config/initializers
via monkeypatching on lib
via generators provided by the gem itself. These tend to generate lots of files, but they usually have a "initialize" or "install" option for setting up the gem.
...
Correct mime type for .mp4
...
When uploading .mp4 file into Perl script, using CGI.pm I see it as video/mp when printing out Content-type for the uploaded file.
I hope it will help someone.
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Delete rows from a pandas DataFrame based on a conditional expression involving len(string) giving K
...
To directly answer this question's original title "How to delete rows from a pandas DataFrame based on a conditional expression" (which I understand is not necessarily the OP's problem but could help other users coming across this question) one way to do this is to use...