python 生成 1900-2100 的二十四节气文件

[学习笔记] 转载

#!/usr/bin/python3.7
# -*- coding:utf-8 -*-

'''
整体思路
1：根据公式算出节气日期 1900 年到 2100  200 年的时间
2：特殊的年份进行纠正
3：保存到文件里去

'''
import sys
import json
import gc
import os

default_encoding = 'utf-8'
if sys.getdefaultencoding() != default_encoding:
    reload(sys)
class jieqi:
    # 计算节气的c常量组
    c_list_21 = [3.87, 18.73, 5.63, 20.646, 4.81, 20.1, 5.52, 21.04, 5.678, 21.37, 7.108, 22.83, 7.5, 23.13, 7.646, 23.042, 8.318, 23.438, 7.438, 22.36, 7.18, 21.94, 5.4055, 20.12]

    c_list_20 = [4.6295, 19.4599, 6.3826, 21.4155, 5.59,20.888, 6.318, 21.86, 6.5, 22.2, 7.928, 23.65, 8.35,  23.95, 8.44, 23.822, 9.098, 24.218, 8.218, 23.08, 7.9, 22.6, 6.11, 20.84]

    # 节气名称组
    name_arr = ["立春", "雨水", "惊蛰", "春分", "清明", "谷雨", "立夏", "小满", "芒种", "夏至", "小暑", "大暑", "立秋", "处暑", "白露", "秋分", "寒露", "霜降", "立冬", "小雪", "大雪", "冬至", "小寒", "大寒"]

    def __init__(self):
        self.c_list=[]

    ## 特殊年份特殊节气进行纠正
    def rectify_year(self,year,jieqiid,day):
        ## 特殊年份
        rectify_year = [2026,2084,1911,2008,1902,1928,1925,2016,1922,2002,1927,1942,2089,2089,1978,1954,1918,2021,1982,2082,2019,2021]
        ## 特殊节气
        rectify_jieqi = [1,3,6,7,8,9,10,10,11,12,14,15,17,18,19,20,21,21,22,22,23]
        ## 偏移量
        rectify_offset = [-1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,-1,-1,1,-1,1]
        pop2 = -1
        if year in rectify_year:
            if year == 2089:
                pop1 = rectify_year.index(year) ## 找到位置
                pop2 = pop1+1
            else:
                pop1 = rectify_year.index(year) ## 找到位置

            if rectify_jieqi[pop1] == jieqiid:
                day = day + int(rectify_offset[pop1])
            if rectify_jieqi[pop2] == jieqiid:
                day = day + int(rectify_offset[pop2])
        return day

    #计算节气日期，并创建文件
    def creat_year_jieqi(self,year):
            year_pre = year//100
            if year_pre == 19:
                c_arr = self.c_list_20
            elif year_pre == 20:
                c_arr = self.c_list_21

            year_num = year%100
            list_arr = []
            for i in range(0, 24):
                c = c_arr[i]
                ## 注意：凡闰年3月1日前闰年数要减一，即：l=[(y-1)/4],因为小寒、大寒、立春、雨水这两个节气都小于3月1日,所以 y = y-1
                if i == 0 or i == 1 or i == 22 or i == 23:
                    if self.comrun(year):
                        days = (year_num * 0.2422 + c) // 1 - ((year_num-1)// 4)
                    else:
                        days = (year_num * 0.2422 + c) // 1 - (year_num // 4)
                else:
                    days = (year_num * 0.2422 + c) // 1 - (year_num // 4)

                ## 特殊年份节气进行纠正
                days = self.rectify_year(year,i,days)

                days = int(days)
                days = '%02d' % days
                y = int(year_num // 1)
                m = i // 2 + 2
                if m == 13:
                    m = 1
                m = '%02d' % m
                y = '%02d' % y
                strs = "{3}{0}-{1}-{2} 00:00:00".format(str(y), str(m), str(days),str(year_pre))
                item = dict(name=self.name_arr[i], jieqiid=str(i + 1), time=strs)
                # print (item)
                list_arr.append(item)
            list_str = json.dumps(list_arr,ensure_ascii=false) ## 中文不进行编码
            file_name = "./json/{0}.json".format(str(year))
            with open(file_name, "w",encoding="utf-8") as f:  ## 打开时用 utf-8 编码
                json.dump(list_str, f,ensure_ascii=false)
                print("{0}已载入文件完成...".format(str(year)))

    # 读取年份为 name 年的节气数据
    def read_json_file(self,name):
        json_file = open('./json/' + name + '.json', 'r',encoding="utf-8")
        json_str = json_file.read()
        dic = json.loads(json_str)
        print(dic)

    # 读取测试
    # read_json_file('2029')

    # 读取所有年份的节气数据
    def check_all_file(self):
        for index in range(1900, 2100):
            c_file_name = './json/{0}.json'.format(str(index))
            if os.path.isfile(c_file_name):
                json_file = open(c_file_name, 'r',encoding="utf-8")
                json_str = json_file.read()
                dic = json.loads(json_str)
                print (str(index) + dic)
    ## 算是否是闰年
    def comrun(self,year):
        i = 0
        if (year % 4) != 0 :
            i=0
        elif ((year % 100) == 0) & ((year % 400) != 0):
            i=0
        else:
            i=1
        return i

jieqi = jieqi()

#jieqi.creat_year_jieqi(2004)
#jieqi.read_json_file('2006')
#jieqi.check_all_file()
#
#for i in range(1900,2100):
#   jieqi.creat_year_jieqi(i)

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