python 节气计算_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)