How to export muti feature class attribute table using python?

[__14]

I use ArcGIS10.4.1

I have several feature classes in feature datasets

I want to export all these features' attribute table into txt automatically by python

I heard about that ArcGIS10.4.1 supports data exchange between R and ArcGIS, how can I export these feature classes' attribute table into R's dataframe?

[DanPatterson_Retired]

the esri r bridge is located on GitHub and there is a blog post on the topic.  The amount of time you would need to spend implementing an automatic versus manual process would depend on your familiarity with programming and the repetitions of this process you would need to make