Question

我试图分配一个名为“ app_price_formula”的变量，以记住它必须执行if语句：

opened_file = open('AppleStore.csv')
from csv import reader
read_file = reader(opened_file)
apps_data = list(read_file)
app_price = 30
app_price_formula = if app_price > 30:
    print('This app is expensive')

但是我得到这个错误

File "<ipython-input-1-da34fd0221c3>", line 7
app_price_formula = if app_price > 30:
                     ^
SyntaxError: invalid syntax

Answer 1

app_price_formula = (app_price > 30)
if app_price_formula:
    print('This app is expensive')

第一条语句将True或False保存在变量中。根据变量的值，执行if语句。

Answer 2

为什么不尝试像这样使用function：

def app_price_forumula(app_price):

    if app_price > 30:

        return print("This app is expensive")

示例：

app_price_formula(40)

哪些印刷品：

"This app is expensive"

Answer 3

尝试一下：


    function pageSel2() {
        var parseAmount2 = localStorage.getItem("amountKey");
        var parseMonth2 = localStorage.getItem("monthKey");
        document.getElementById("demo1").value = parseAmount2;
        document.getElementById("demo2").value = parseMonth2;
    }

    function roundAmount() {
        var x=document.getElementById("demo1"); 
        x.value=Math.round(x.value/250)*250;
    }

    function roundMonth() {
        var x=document.getElementById("demo2"); 
        x.value=Math.round(x.value/12)*12;
    }

   pageSel2();

execute image

如何为If语句分配变量？

3 个答案: