import xgboost as xgb
import pandas as pd
import os
from sklearn.metrics import r2_score
from sklearn.model_selection import train_test_split
import matplotlib as mpl
import matplotlib.pyplot as plt
def season(x):
    if str(x)[5:7] in ('06','07','08','12','01','02'):
        return 1
    else:
        return 0
mpl.rcParams['font.sans-serif']=['kaiti']


pd.set_option('display.width',None)


df = pd.read_excel(r'C:\Users\user\PycharmProjects\pytorch2\入模数据\宁波数据.xlsx',index_col='dtdate')
df.index = pd.to_datetime(df.index,format='%Y-%m-%d')
df['season'] = df.index.map(season)
plt.plot(range(len(df)),df['售电量'])
plt.show()
print(df.head())


df_eval = df.loc['2023-09']
df_train = df.loc['2021-01':'2023-08']
# df_train = df[400:850]
print(len(df_eval),len(df_train),len(df))



df_train = df_train[['tem_max','tem_min','holiday','24ST','rh','prs','售电量','season']]


# IQR = df['售电量'].describe()['75%'] - df['售电量'].describe()['25%']
# high = df['售电量'].describe()['75%'] + 1.5*IQR
# low = df['售电量'].describe()['25%'] - 1.5*IQR
# print('异常值数量：',len(df[(df['售电量'] >= high) | (df['售电量'] <= low)]))
#
# df_train = df_train[(df['售电量'] <= high) & (df['售电量'] >= low)]


X = df_train[['tem_max','tem_min','holiday','24ST','season']]
X_eval = df_eval[['tem_max','tem_min','holiday','24ST','season']]
y = df_train['售电量']

# best_goal = 1
# best_i = {}
# for i in range(400):

x_train,x_test,y_train,y_test = train_test_split(X,y,test_size=0.1,random_state=18)
model = xgb.XGBRegressor(max_depth=6, learning_rate=0.05, n_estimators=150)
model.fit(x_train,y_train)


y_pred = model.predict(x_test)
result_test = pd.DataFrame({'test':y_test,'pred':y_pred},index=y_test.index)

# 指标打印
print(abs(y_test - y_pred).mean() / y_test.mean())
eval_pred = model.predict(X_eval)

result_eval = pd.DataFrame({'eval':df_eval['售电量'],'pred':eval_pred},index=df_eval['售电量'].index)

goal = (result_eval['eval'][-3:].sum()-result_eval['pred'][-3:].sum())/result_eval['eval'].sum()
print(goal)

goal2 = (result_eval['eval'][-23:].sum()-result_eval['pred'][-23:].sum())/result_eval['eval'].sum()
print(goal2)
#     if abs(goal) < best_goal :
#         best_goal = abs(goal)
#         best_i['best_i'] = i
#         x = goal2
#
# print(best_i,best_goal,x)


# result_eval.to_csv(r'C:\Users\user\Desktop\9月各地市日电量预测结果\宁波.csv')
# with open(r'C:\Users\user\Desktop\9月各地市日电量预测结果\偏差率.txt','a',encoding='utf-8') as f:
#     f.write(f'宁波月末3天偏差率：{round(goal,5)},9号-月底偏差率：{round(goal2,5)}\n')
# 保存模型
# model.save_model('ningbo.bin')
import numpy as np
loaded_model = xgb.XGBRegressor()
loaded_model.load_model('ningbo.bin')

X_eval = np.array([[23.3,15.6,23,0,0],
                   [22.5,16.0,23,1,0],
                       [23.4,16.4,23,1,0],
                       [20.8,15.3,23,0,0],
                       [23.6,14.0,23,0,0]])
print(model.predict(X_eval))