python之在 Python 3 中将 str 显式转换为 float

我收到“TypeError:无法将‘float’对象隐式转换为 str”错误，因为我试图用字符串除以 float 。

我试图将字符串转换为 float ，但仍然出现错误。

字符串“empNumber”全是数字，但有一个逗号(例如:112,000)——因此“替换”功能会去除逗号。当我尝试划分“final/decimal”时出现错误。如何修复此类型错误？

def revPerEmployee(): 
    for ticker in sp500short: 
        searchurl = "http://finance.yahoo.com/q/ks?s="+ticker 
        f = urlopen(searchurl) 
        html = f.read() 
        soup = BeautifulSoup(html, "html.parser") 
 
        searchurlemp = "http://finance.yahoo.com/q/pr?s="+ticker+"+Profile" 
        femp = urlopen(searchurlemp) 
        htmlemp = femp.read() 
        soupemp = BeautifulSoup(htmlemp, "html.parser") 
 
        try: 
            revenue2 = soup.find("td", text="Revenue (ttm):").find_next_sibling("td").text 
            empCount2 = soupemp.find("td", text="Full Time Employees:").find_next_sibling("td").text  
 
        except: 
            revenue2 = "There is no data for this company" 
            empCount2 = "There is no data for this company"          
 
        if revenue2 == "There is no data for this company" or empCount2 == "There is no data for this company": 
            lastLetter = ticker+": There is no data for this company" 
        else: 
            lastLetter = revenue2[len(revenue2)-1:len(revenue2)] 
            empNumber = empCount2.replace(",", "") 
            decimal = float(empNumber) 
 
        if lastLetter == "B": 
            result = revenue2[:-1] 
            revNum = float(result) 
            final = revNum * 1000000000.0 
            revPerEmp = final/decimal 
            print(ticker+": "+revPerEmp) 
 
        elif lastLetter == "M": 
            result = revenue2[:-1] 
            revNum = float(result) 
            final = revNum * 1000000.0 
            #newnum = "{:0,.2f}".format(final) 
            revPerEmp = final/decimal 
            print(ticker+": "+revPerEmp) 
 
        elif lastLetter == "K": 
            result = revenue2[:-1] 
            revNum = float(result) 
            final = revNum * 1000.0 
            #newnum = "{:0,.2f}".format(final) 
            revPerEmp = final/decimal 
            print(ticker+": "+revPerEmp) 
 
        else: 
            print(lastLetter) 

请您参考如下方法:

17 + "orange" 是废话，不能把数字和字符串相加。你要

print("%s: %s" % (ticker, revPerEmp)) 

(您可以将 %s 切换为其他格式，例如 %.2f)，或者

print(str(ticker) + ": " + str(revPerEmp))