Check out example codes for "pytho count avro file". It will help you in understanding the concepts better.

Code Example 1

Get the latest released version or build it from source.

Then simply invoke the tool via

java -jar avrocount.jar /path/to/myfile.avro

And it will print the amount of records found within the file to stdout.
Folders containing avro files

java -jar avrocount.jar /path/to/folder

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