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parq-csv conversion script, data added to gitignore #5

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3 changes: 2 additions & 1 deletion .gitignore
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Original file line number Diff line number Diff line change
Expand Up @@ -2,6 +2,7 @@
.Rhistory
.RData
.Ruserdata
test_data/*
data-output/test_data/*
example_rolling/*
.DS_Store
data-output/test_data_output/*
21 changes: 21 additions & 0 deletions parquet_output_to_csv.py
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Original file line number Diff line number Diff line change
@@ -0,0 +1,21 @@
import pandas as pd
import os
from pyarrow import parquet

input_dir = "data-output/test_data"
output_dir = "data-output/test_data_output"

for partition in os.listdir(input_dir):
if partition.startswith("end_of_this_period="):
partition_path = os.path.join(input_dir, partition)
date_value = partition.split("=")[-1]

for file in os.listdir(partition_path):
if file.endswith(".parquet"):
file_path = os.path.join(partition_path, file)
df = pd.read_parquet(file_path, engine='pyarrow')

df['end_of_this_period'] = date_value

output_file = os.path.join(output_dir, f"{date_value}.csv")
df.to_csv(output_file, index=False)