pm4py tutorials - tutorial #4: Playing with Event Data; Lambda Functions

In this tutorial we show how to use lambda functions, in PM4Py.

[ДаниилИмани]

00:48 - lambda functions; filter, map and sort in Python
08:03 - reading XES file and filtering traces by length using filter with a lambda function
13:29 - using a filter_ function from pm4py library to conserve the EventLog format
27:15 - convert_to_event_stream function from pm4py library

[佳佳-oz]

你好，这个运行示例的run-example.xes is not Found

[VictorUdd]

As many others I get an error message because of this line:
from pm4py.object.log util import func as functools

It seems like this module was removed since version 2.1.3.1 of pm4py

I solved it by removing the import line and using pm4py.filter_trace() instead of functools.filter_() in the code:
trace_log = pm4py.filter_trace(lambda t: len(t) > 5, event_log)

[hussamalh]

Thanks for this tutorial, it is very helpful...these methods convert_to_event_stream and convert_to_dataframe are extremely handy especially when one want to do some ML on log like classifications and anomaly detections..etc which can be an interesting tutorial idea btw :)

[journeyofchanges]

I get an import error as “func“ does not seem to be a part of pm4py.objects.log.util anymore (2.7.11) The release notes and the new docs don’t say where this went. Can you help out?

[tobiasscherl]

Thank you for the intersting tutorials. 🙂
I just got this ImportError:

ImportError Traceback (most recent call last)
in <module>
1 import pm4py
----> 2 from pm4py.objects.log.util import func as functools

ImportError: cannot import name 'func' from 'pm4py.objects.log.util'


How can I resolve this? Thank you very much in advance!

[kirthikaranantharam]

These are good videos. But code in this video seems to have errors. The iterable 't' we get out of event_log is not a list but a dataframe and all it contains is the same number of rows as the total number of events in the .xes. All the "trace" elements are lost in the read_xes process. I have typed the exact same code as in this tutorial and it does not give the same output. Can u please help?

The other issue I am facing is that the "from pm4py.objects.log.util import func" also fails.

I am using Google Colab - not sure if this is the issue.

[angelodicarlo]

Hi, one question: how can i remove a trace in xes file with python?

[simondevos]

Thanks for the great tutorial!
Is there a source where the used code of your guides is available?
Thanks