pitrou commented on code in PR #13582:
URL: https://github.com/apache/arrow/pull/13582#discussion_r920233875


##########
python/pyarrow/fs.py:
##########
@@ -227,16 +227,28 @@ def copy_files(source, destination,
 
     Examples
     --------
-    Copy an S3 bucket's files to a local directory:
+    Inspect an S3 bucket's files:
 
-    >>> copy_files("s3://your-bucket-name",
-    ...            "local-directory") # doctest: +SKIP
+    >>> s3, path = fs.FileSystem.from_uri(
+    ...            "s3://registry.opendata.aws/roda/ndjson/")
+    >>> selector = fs.FileSelector(path)
+    >>> s3.get_file_info(selector)
+    [<FileInfo for 'registry.opendata.aws/roda/ndjson/index.ndjson':...]
 
-    Using a FileSystem object:
+    Copy one file from S3 bucket to a local directory:
 
-    >>> copy_files("your-bucket-name", "local-directory",
-    ...            source_filesystem=S3FileSystem(...)) # doctest: +SKIP
+    >>> fs.copy_files("s3://registry.opendata.aws/roda/ndjson/index.ndjson",
+    ...               "file:///{}/index_copy.ndjson".format(local_path))
 
+    >>> selector2 = fs.FileSelector(str(local_path))
+    >>> local.get_file_info(selector2)

Review Comment:
   The reader doesn't know what `local` is, so is this the best way of 
presenting this example?
   Perhaps instantiate the filesystem explicitly?
   Also, I think you can pass `local_path` directly instead of a selector.
   
   ```suggestion
       >>> fs.LocalFileSystem().get_file_info(local_path)
   ```



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