Home PHP C# C++ Android Java Javascript Python IOS SQL HTML Categories

Groupby to csv file

If you just want the unique combinations from the two columns, call drop_duplicates() on those columns:

unique_combs = data[['one',

  one two
0   a   z
1   a   y
2   b   y

Categories : Python

Related to : Groupby to csv file
C# GroupBy passing value to Key but not including it in GroupBy logic
You can't modify the key and add an additional data, you can project your GroupBy results to an anonymous type where you could append roleID from the first element of your group like: var query = fooList.GroupBy(r => r.locationID) .Select(grp => new { Key = grp.Key + grp.First().roleID }); Or you can do: var query = fooList.GroupBy(r => r.locationID) .Select(gr

Categories : C#
Pandas-way to groupby like itertools.groupby
You could use diff followed by cumsum to give each group of Trues and Falses its own number: import numpy as np import pandas as pd x = np.arange(0,4*np.pi,0.1) y = np.sin(x) df = pd.DataFrame(y, index=x) mask = np.sin(df[0])>=0 groupnum = mask.diff().fillna(method='bfill').fillna(0).cumsum() print([(key, grp.head()) for key, grp in df.groupby(groupnum)]) yields [(0, 0 0.0 0.0

Categories : Python
How to sort after join and groupby
To order the items in the group, just call OrderBy: var query = from p in _productRepository.Table join ps in _productScheduleRepository.Table on p.Id equals ps.ProductId where ... group new{ p, ps } by p.Id into Grouped select Grouped.OrderBy(pair =>;

Categories : C#
angular-filter nested groupby
Your data structure doesn't correspond to your code logic. This works fine: <!DOCTYPE html> <html ng-app="app"> <head> <script src=""></script> <script src=""></script> <script>

Categories : Angularjs
Linq to sql for groupby giving timeout
Maybe Linq to Sql generated not effective Sql query? You can try to fetch all data before apply GroupBy operation. Like this: var vrdetails = vrtemp.ToList().GroupBy(x => x.CompName); In that case you run GroupBy operation on server side. It will increase volume of transferred data but it can work more effective on Sql server

Categories : C#
Recently Add
Adding json to new Django database
document clustering in python
Only read the last character in a .txt file
Is it possible to redirect to different domain retaining the trailing endpoint, from a route?
Python NameError: not defined
Numpy array loop
Turning off Tick Marks in Bokeh
Python: Number and operator concatenation not working (Euler's Method)
Python: Twitter API tweets/search: Flatten nested dictionary to columns
Python 2.7 cmd autocomplete readline buffers seem stale
Memory usage/efficiency for pandas dataframe versus lists versus tuples, etc.
How can i use multiple lists as arguments in a function and receive them differently?
PyQt - setText method of QTableWidget gets AttributeError
Matplotlib - get value of autoscale
Backwards axes in numpy.delete
Twilio - How to determine the length of a conference call?
Counting string using for loop
Automating creation of class instances in python for an undetermined amount of instances
Printing 2D-array in a grid
Load PreComputed Vectors Gensim
IPython _repr_html_
Reversing a number using recursion
Is there a configuration under which a numpy operation will work on more than a single core/thread?
Is there a better way to write this if-statement?
Python: Effective reading from a file using csv module
Django/Python: CSV for-in loop overriding first row each time through
How to read the pickled igraph graph object from old version by new version igraph
Tornado WebSocket with Django ORM with shared session
trying to plot contours of bivariate normal, won't work with a correlation term
Python split users input
© Copyright 2017 Publishing Limited. All rights reserved.