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# Solution to programming challenge for Python Essential Libraries course by Joe Marini

from fs.osfs import OSFS

# Challenge - figure out the total size of all text files in a folder structure

totalsize = 0

# Create a file walker to walk the FileExamples directory

with OSFS(".") as myfs:

# We need to specify the details namespace to get size info

for path, info in myfs.walk.info(namespaces=["details"]):

# Check for an ending extension of .txt

if path.endswith(".txt") and not info.is_dir:

totalsize += info.size

# print the final results

print("Total size of files is: {0}".format(totalsize))