Question

我想创建一个允许用户选择范围的功能，它会打印出该范围内的数字。但是，我一直用我的代码获取空DataFrame。谁能帮我？

`将pandas导入为pd

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

当您重复使用时，您将覆盖your_sales变量，因此您应该为min和max参数使用不同的变量名称。然后，您需要使用loc生成一个正确的布尔掩码，并使用括号括起您的布尔条件，并将&括起来and布尔值数组：

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])

以上应该有效

Python，Pandas - 如何在数据范围内打印某些内容？

1 个答案: