.py 积累

#读 .txt .csv
root = 'C:\\Users\\justin\\Desktop\\DHL\\standard\\'
dn=data_names[3]
t_tr_in = pd.read_csv(os.path.join(root, dn,'train.txt'),sep='\t')
#写 .csv
M_T_test_day_extend.to_csv('M_T_test_day_extend.csv',index=0)

#datetime
m_t_test[time_col] = pd.to_datetime( m_t_test[time_col])

#merge
re2 = pd.merge(re111,m_t_train,on=['t_week_str','warehouse'],how='left')
#concat
re111 = pd.concat([re1,re11],axis=0)