kma-data-api/extract_continuous_data_fast.py

111 lines
3.6 KiB
Python

import os
import requests
import csv
from datetime import datetime, timedelta
import concurrent.futures
import threading
import time
# 1. API 인증키 설정
def get_env_variable(var_name):
if os.path.exists(".env"):
with open(".env", "r") as f:
for line in f:
if "=" in line:
k, v = line.split("=", 1)
if k.strip() == var_name:
return v.strip()
return os.getenv(var_name)
API_KEY = get_env_variable("WEATHER_KEY") or get_env_variable("KMA_API_KEY")
TARGET_LAT = 34.925323
TARGET_LON = 127.710838
BASE_URL = "https://apihub.kma.go.kr/api/typ01/url/sfc_nc_var.php"
OBS_ELEMENTS = "ta,hm,td,wd_10m,ws_10m,uu,vv,rn_ox,vs"
INTERVAL = 5
# 추출 기간
start_dt = datetime(2026, 4, 1, 0, 0)
end_dt = datetime(2026, 5, 7, 23, 55)
def fetch_chunk(tm1, retries=2):
tm2 = tm1 + timedelta(minutes=55)
params = {
"tm1": tm1.strftime("%Y%m%d%H%M"),
"tm2": tm2.strftime("%Y%m%d%H%M"),
"obs": OBS_ELEMENTS,
"itv": INTERVAL,
"lon": TARGET_LON,
"lat": TARGET_LAT,
"help": 0,
"authKey": API_KEY
}
for attempt in range(retries):
try:
response = requests.get(BASE_URL, params=params, timeout=30)
response.raise_for_status()
rows = []
for line in response.text.strip().split('\n'):
if line.startswith('#') or not line.strip(): continue
parts = [p.strip() for p in line.replace(',', ' ').split()]
if len(parts) >= 10:
rows.append({
"tm": parts[0],
"ta": parts[1],
"hm": parts[2],
"td": parts[3],
"wd_10m": parts[4],
"ws_10m": parts[5],
"uu": parts[6],
"vv": parts[7],
"rn_ox": parts[8],
"vs": parts[9]
})
return rows
except Exception:
if attempt < retries - 1:
time.sleep(1)
else:
return []
def main():
time_chunks = []
curr = start_dt
while curr <= end_dt:
time_chunks.append(curr)
curr += timedelta(hours=1)
print(f"--- 연속 데이터 추출 시작 (총 {len(time_chunks)}개 구간, 5개 스레드) ---")
output_filename = "weather_data_continuous_20260401_20260507.csv"
keys = ["tm", "ta", "hm", "td", "wd_10m", "ws_10m", "uu", "vv", "rn_ox", "vs"]
all_data = []
completed = 0
lock = threading.Lock()
with concurrent.futures.ThreadPoolExecutor(max_workers=5) as executor:
future_to_chunk = {executor.submit(fetch_chunk, t): t for t in time_chunks}
for future in concurrent.futures.as_completed(future_to_chunk):
res = future.result()
if res:
all_data.extend(res)
completed += 1
if completed % 20 == 0:
print(f" 진행 상황: {completed}/{len(time_chunks)} 완료 ({int(completed/len(time_chunks)*100)}%)")
# 정렬 및 저장
print("정렬 및 저장 중...")
all_data.sort(key=lambda x: x['tm'])
with open(output_filename, 'w', newline='', encoding='utf-8-sig') as f:
writer = csv.DictWriter(f, fieldnames=keys)
writer.writeheader()
writer.writerows(all_data)
print(f"최종 완료: {output_filename} (총 {len(all_data)}행)")
if __name__ == "__main__":
main()