尝试使用包含 > 的公式求解时，在 Python 中不断得到 Type_Error

Question

我需要打印 XML 数据中所有大于平均值的值。我想出了如何解决平均值问题，但我无法打印所有高于平均值的值。这是代码，公式在more_than_average函数

import xml.etree.cElementTree as ET


def load_data(fpath="properties.xml"):
    tree = ET.parse(fpath)
    root = tree.getroot()

    prop_list = []

    for child in root:
        data = child.attrib.copy()
        data['netIncome'] = float(child.text)
        data["id"] = data["id"]
        data['cost'] = float(data['cost'])
        data['downPayment'] = float(data['downPayment'])
        data['state'] = data['state']
        data['percentage'] = float(data['percentage'])
        prop_list.append(data)

    return prop_list

def more_average_income(prop_list):
    value = 0
    for i in prop_list:
        value += i['netIncome']
        average = {round(value / len(prop_list), 2)}
        more_aver_inc = (value > average)
        print(more_aver_inc)

这是正在导入的数据示例

<properties>
    <property id="H00001" cost="106000"  downPayment="24380" state="NM" percentage="0.12">2925.6</property>
    <property id="H00002" cost="125000"  downPayment="30000" state="AZ" percentage="0.15">4500</property>
    <property id="H00003" cost="119000"  downPayment="24990" state="NH" percentage="0.13">3248.7</property>
    <property id="H00004" cost="124000"  downPayment="31000" state="MI" percentage="0.19">5890</property>
    <property id="H00005" cost="143000"  downPayment="34320" state="CZ" percentage="0.11">3775.2</property>
    <property id="H00006" cost="139000"  downPayment="30580" state="VI" percentage="0.12">3669.6</property>
    <property id="H00007" cost="132000"  downPayment="26400" state="ND" percentage="0.19">5016</property>
    <property id="H00008" cost="134000"  downPayment="26800" state="CZ" percentage="0.17">4556</property>
    <property id="H00009" cost="143000"  downPayment="34320" state="PA" percentage="0.14">4804.8</property>
    <property id="H00010" cost="123000"  downPayment="25830" state="IN" percentage="0.2">5166</property>
    <property id="H00011" cost="116000"  downPayment="24360" state="IL" percentage="0.09">2192.4</property>
    <property id="H00012" cost="150000"  downPayment="36000" state="OR" percentage="0.11">3960</property>
    <property id="H00013" cost="117000"  downPayment="23400" state="VI" percentage="0.19">4446</property>
    <property id="H00014" cost="116000"  downPayment="26680" state="SC" percentage="0.16">4268.8</property>
</properties>

我不断收到此错误

Traceback (most recent call last):
  File "/Users/school/VisualStudio/01.LESSON/properties.py", line 77, in <module>
    funct(data)
  File "/Users/school/VisualStudio/01.LESSON/properties.py", line 59, in more_average_income
    more_aver_inc = (value > average)
TypeError: '>' not supported between instances of 'float' and 'set'

Answer 1

平均值是 set()

通过用方括号括起您的值，您正在创建一个包含一个值的集合。 Python 无法比较 float 和 set，这就是它抛出错误的原因。

average = round(value / len(prop_list), 2)

尝试使用包含 > 的公式求解时，在 Python 中不断得到 Type_Error

Keep getting Type_Error in Python when trying to solve with formula containing >

python

xml

database

import

function