fixing issue# 106

Author: Nikhil Raverkar

test/unit/test_modules.py

@@ -1,9 +1,12 @@
 import pandas as pd
+
+
 def test_pandas_version():
     import pandas as pd
     major, minor, patch = pd.__version__.split('.')
     assert major == '1'
 
+
 def test_pyarrow_to_parquet_conversion_regression_issue_106():
-    df = pd.DataFrame({'x': [1,2]})
-    df.to_parquet('test.parquet', engine='pyarrow')
+    df = pd.DataFrame({'x': [1, 2]})
+    df.to_parquet('test.parquet', engine='pyarrow')