未定義變量和縮進錯誤

Question

我是python的新手，我正在編寫代碼以在一周中的幾天之間創建性別之間的繪圖圖，我不知道它有什么問題，因為沒有結果，並且有未定義變量'gender'的錯誤

注意：我正在使用python 3

import calendar
def gender_perday_analysis(filename, gender):
    with open(filename, 'r') as f_in:
        Reader = csv.DictReader(f_in)

        week_days = 0
        Female_count = []
        Male_count = []

        for row in Reader:
            if row['gender'] == 'Female':
                if row['day_of_week'] == 'Sunday':
                    week_days+= 1
                    Female_count.append(week_days)
                elif row['day_of_week'] == 'Monday':
                    week_days+= 1
                    Female_count.append(week_days)
                elif row['day_of_week'] == 'Tuesday':
                    week_days+= 1
                    Female_count.append(week_days)
                elif row['day_of_week'] == 'Wednesday':
                    week_days+= 1
                    Female_count.append(week_days)
                elif row['day_of_week'] == 'Thursday':
                    week_days+= 1
                    Female_count.append(week_days)
                elif row['day_of_week'] == 'Friday':
                    week_days+= 1
                    Female_count.append(week_days)
                else:
                    week_days+= 1
                    Female_count.append(week_days)
            else:
                week_days+= 1
                Male_count.append(week_days)

        return Male_count, Female_count


Chicago = './data/Chicago-2016-Summary.csv'
result2 = gender_perday_analysis(Chicago, 'gender')
print(result2)

Answer 1

if row['gender'] == 'Female':

您傳入的是一串'gender' ，而不是可變的gender 。 更正以下內容之一：

if row[gender] == 'Female':

Answer 2

導入CSV，可以幫助添加錯誤

Answer 3

可能是您的文件實際上沒有讀取您認為需要的內容。 讀取文件可能是錯誤的。 如果可以添加IDE給出的確切錯誤，將很有幫助。 測試讀取文件是否有問題。 添加此語句

for row in Reader:
       print(row)

此外，您可以嘗試使用Pandas讀取和分析文件，因為這使事情變得更加容易。