Python，Pandas-如何在數據范圍內打印某些內容？

Question

我想創建一個允許用戶選擇范圍的函數，它將打印出該范圍內的數字。 但是，我的代碼不斷獲取空的DataFrame。 誰能幫我？

`將熊貓作為pd導入

if __name__ == "__main__":   
file_name = "sales_rossetti.xlsx"    

# Formatting numbers (e.g. $1,000,000)
pd.options.display.float_format = '${:,.0f}'.format

# Reading Excel file
df = pd.read_excel(file_name, index_col = 0, convert_float = False)
print ("Welcome to Rossetti's Sales program\n")  
print ("1) Search by State")
print ("2) Search by Jan Sales")
print ("3) Search by Q2 sales")
print ("4) Exit")

my_option = input ("Please select a menu option:")


if (my_option=="2"):
    my_columns = ["Name", "City", "State", "Jan"]
    your_sales = input("please enter the minimum sale: ")
    your_sales = input("please enter the maxium sale: ")
    print (df[my_columns][df.Jan>int(your_sales)][df.Jan<int(your_sales)])`

Answer 1

重復使用時，您將覆蓋your_sales變量，因此，應為min和max參數使用不同的變量名稱。 然后，您需要使用loc生成適當的布爾掩碼，並使用括號和& to and布爾值數組將布爾條件括起來：

if (my_option=="2"):
    my_columns = ["Name", "City", "State", "Jan"]
    min_sales = input("please enter the minimum sale: ")
    max_sales = input("please enter the maxium sale: ")
    print (df.loc[(df.Jan > int(min_sales) ) & (df.Jan < int(max_sales)), my_columns])

以上應該工作