python_weather/web/data/temp_now.py

import json

from sqlalchemy import text


def tem_now(session):
    query2 = text('SELECT city_name,temperature FROM tem_now_analyse ORDER BY temperature DESC LIMIT 12')
    data = session.execute(query2).fetchall()
    x = []
    y = []
    for i in data:
        x.append(i[0])
        y.append(float(i[1]))
    dict_list = {"x": x, "y": y}
    # Serialize the list of dictionaries to JSON
    data = json.dumps(dict_list, ensure_ascii=False, indent=4)

    # 将 JSON 数据写入 JavaScript 文件
    with open('data.js', 'a', encoding='utf-8') as js_file:
        js_file.write('const Chart4_Data = ')
        js_file.write(data)
        js_file.write("\n\n")


def tem_avg(session):
    query2 = text('SELECT AVG(temperature) FROM tem_now_analyse')
    data = session.execute(query2).fetchall()
    with open('data.js', 'a', encoding='utf-8') as js_file:
        js_file.write('const TMP_Data = ')
        js_file.write(str(round(data[0][0], 1)))
        js_file.write("\n\n")


def tem_all(session):
    query2 = text('SELECT city_name,temperature FROM tem_now_analyse')
    data = session.execute(query2).fetchall()
    data1 = []
    for i in data:
        data1.append({
            "name": f"{i[0]}区",
            "value": i[1],
        })
    with open('data.js', 'a', encoding='utf-8') as js_file:
        js_file.write('const TMP_ALL_DATA = ')
        js_file.write(json.dumps(data1, ensure_ascii=False, indent=4))
        js_file.write("\n\n")