TST: Read bz2 files from S3 in PY2

Addresses #14874

Author: dhimmel

pandas/io/tests/parser/test_network.py

@@ -64,18 +64,12 @@ def setUp(self):
  @tm.network
  def test_parse_public_s3_bucket(self):
  for ext, comp in [('', None), ('.gz', 'gzip'), ('.bz2', 'bz2')]:
- if comp == 'bz2' and compat.PY2:
- # The Python 2 C parser can't read bz2 from S3.
- self.assertRaises(ValueError, read_csv,
- 's3://pandas-test/tips.csv' + ext,
- compression=comp)
- else:
- df = read_csv('s3://pandas-test/tips.csv' +
- ext, compression=comp)
- self.assertTrue(isinstance(df, DataFrame))
- self.assertFalse(df.empty)
- tm.assert_frame_equal(read_csv(
- tm.get_data_path('tips.csv')), df)
+ df = read_csv('s3://pandas-test/tips.csv' +
+ ext, compression=comp)
+ self.assertTrue(isinstance(df, DataFrame))
+ self.assertFalse(df.empty)
+ tm.assert_frame_equal(read_csv(
+ tm.get_data_path('tips.csv')), df)
 
  # Read public file from bucket with not-public contents
  df = read_csv('s3://cant_get_it/tips.csv')
@@ -104,43 +98,31 @@ def test_parse_public_s3a_bucket(self):
  @tm.network
  def test_parse_public_s3_bucket_nrows(self):
  for ext, comp in [('', None), ('.gz', 'gzip'), ('.bz2', 'bz2')]:
- if comp == 'bz2' and compat.PY2:
- # The Python 2 C parser can't read bz2 from S3.
- self.assertRaises(ValueError, read_csv,
- 's3://pandas-test/tips.csv' + ext,
- compression=comp)
- else:
- df = read_csv('s3://pandas-test/tips.csv' +
- ext, nrows=10, compression=comp)
- self.assertTrue(isinstance(df, DataFrame))
- self.assertFalse(df.empty)
- tm.assert_frame_equal(read_csv(
- tm.get_data_path('tips.csv')).iloc[:10], df)
+ df = read_csv('s3://pandas-test/tips.csv' +
+ ext, nrows=10, compression=comp)
+ self.assertTrue(isinstance(df, DataFrame))
+ self.assertFalse(df.empty)
+ tm.assert_frame_equal(read_csv(
+ tm.get_data_path('tips.csv')).iloc[:10], df)
 
  @tm.network
  def test_parse_public_s3_bucket_chunked(self):
  # Read with a chunksize
  chunksize = 5
  local_tips = read_csv(tm.get_data_path('tips.csv'))
  for ext, comp in [('', None), ('.gz', 'gzip'), ('.bz2', 'bz2')]:
- if comp == 'bz2' and compat.PY2:
- # The Python 2 C parser can't read bz2 from S3.
- self.assertRaises(ValueError, read_csv,
- 's3://pandas-test/tips.csv' + ext,
- compression=comp)
- else:
- df_reader = read_csv('s3://pandas-test/tips.csv' + ext,
- chunksize=chunksize, compression=comp)
- self.assertEqual(df_reader.chunksize, chunksize)
- for i_chunk in [0, 1, 2]:
- # Read a couple of chunks and make sure we see them
- # properly.
- df = df_reader.get_chunk()
- self.assertTrue(isinstance(df, DataFrame))
- self.assertFalse(df.empty)
- true_df = local_tips.iloc[
- chunksize * i_chunk: chunksize * (i_chunk + 1)]
- tm.assert_frame_equal(true_df, df)
+ df_reader = read_csv('s3://pandas-test/tips.csv' + ext,
+ chunksize=chunksize, compression=comp)
+ self.assertEqual(df_reader.chunksize, chunksize)
+ for i_chunk in [0, 1, 2]:
+ # Read a couple of chunks and make sure we see them
+ # properly.
+ df = df_reader.get_chunk()
+ self.assertTrue(isinstance(df, DataFrame))
+ self.assertFalse(df.empty)
+ true_df = local_tips.iloc[
+ chunksize * i_chunk: chunksize * (i_chunk + 1)]
+ tm.assert_frame_equal(true_df, df)
 
  @tm.network
  def test_parse_public_s3_bucket_chunked_python(self):