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Questions - counting

Counting and grouping data that have the same value in several columns

I have a hard time doing this particular task: from the data below I want to count the elements that are equal to 0 in all Degrees and group them. In other words, how many X1 have all of the three deg...
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Yves Laurent

python

dataframe

grouping

apply

counting

Votes: 0

Answers: 2

Latest Answer

One reasonable way to do this is to make another column before the groupby: df['check'] = df['Degree A'] + df["Degree B"] + df['Degree C'] == 0 df.groupby(['Element'])['check'].sum() which...
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Tanner Eastmond

How do I count multiple placeholders in a String in C#?

Given is a string str 'Hello <name1>, hello <name2> and hello <name3>' The <nameX>s are placeholders. How do I count the amount of different placeholders in this string?
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xzeed

c#

string

counting

Votes: 0

Answers: 1

Latest Answer

If you want a more generic solution that handles placeholders starting from any number, with possible gaps inbetween, it's trivially easy with regex: Regex.Matches(s, @"<name\d+>").Cou...
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Blindy

XSLT scheme for create a table whose header and rows are separate and hierarchical

I have a problem in order to convert a file that looks like this into a "flat" table These files are uploaded during the exchange. There are many of them, but they have one template. First a...
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Vladimir

for-loop

xslt

counting

Votes: 0

Answers: 2

Latest Answer

Unfortunately your provided XML is invalid. And you don't provide an example how the output should look like. But however, just a quick, hopefully helpful answer to your main problem. How to avoid rep...
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burki

Python file handling / counting amounts in file

This code is to read from a file then count the amount of times the same ip comes up and print the results to a file i have made called results.csv, it is printing to the PowerShell on python but not ...
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papabeale

file

printing

counting

nothing

Votes: 0

Answers: 1

Latest Answer

Not sure what happens if you indent it wrong like this: But if that's the place where your bug is, I'm guessing it's the reason. This is how you indent if-else: for key in iplist.keys(): line = &...
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James Z

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