我創建了一個類對象,它從數據庫中檢索信息並將其存儲在pandas中,以便我可以使用某些數據科學庫進行操作。返回與dtype一起使用np.divide函數時的數字:float64
class IntDailyGoals (object):
def __init__(self, begin_date, end_date, store=None):
self.begin_date = begin_date
self.end_date = end_date
self.store = store
self.int_mnth_goal = pd.DataFrame(list(StoreGoalsInput.objects.values('store_number',
'interest',
'date')))
self.int_mnth_goal['interest'] = pd.to_numeric(self.int_mnth_goal['interest'])
self.int_mnth_goal['date'] = pd.to_datetime(self.int_mnth_goal['date'])
self.mnth_goal_int =self.int_mnth_goal[(self.int_mnth_goal['date'] >= self.begin_date) &
(self.int_mnth_goal['date'] <= self.end_date) &
(self.int_mnth_goal['store_number'] == self.store.store_number)]
self.mnth_goal_int= self.mnth_goal_int['interest']
self.tot_workingdays = np.busday_count(np.datetime64(self.begin_date),
np.datetime64(self.end_date),
weekmask='Mon Tue Wed Thu Fri Sat')
self.div_intmnthgoal_workingdays = round(np.divide(self.mnth_goal_int, self.tot_workingdays),2)
def get_div_goalsint_wdays(self):
div_goalsint_wdays = self.div_intmnthgoal_workingdays
return div_goalsint_wdays
def __str__(self):
return self.get_div_goalsint_wdays()
這將返回:
2 6558.4
Name: interest, dtype: float64
我只需要它返回整數6558.4
,因爲這是顯示在Django模板。
我已經試過這樣:
def get_div_goalsint_wdays(self):
div_goalsint_wdays = self.div_intmnthgoal_workingdays['interest']
return div_goalsint_wdays
但我得到一個KeyError: 'interest'
阿德里安馬蒂斯,謝謝!隨着我學習的進步,我需要進一步理解.iloc。你的建議已經明確指出了我的正確方向。 –
'iloc'用於基於整數位置的索引(從0到長度-1)。請參閱https://pandas.pydata.org/pandas-docs/stable/generated/pandas.Series.iloc.html?highlight=iloc#pandas.Series.iloc –
再次感謝!我記得在我參加的數據科學課程中簡要回顧了這一點。我相信我的問題的一部分是迄今爲止所有的理論。這是看到它以這種方式使用的進展,所以我很感謝你和其他人的幫助! –