对已解析的xml数据执行计算时，如何避免零错误除法

Question

请回答我，我已经编码了10天了。我在执行代码中的循环时遇到麻烦，但是我可以肯定的是，这是因为我得到了回溯。

我使用以下代码解析从url获得的xml文件：

pattern4 = re.compile('title=\'Naps posted: (.*) Winners:')

pattern5 = re.compile('Winners: (.*)\'><img src=')

for row in xmlload1['rows']:

    cell = row["cell"]

##### defining the Keys (key is the area from which data is pulled in the XML) for use   in the pattern finding/regex

    user_delimiter = cell['username']

    selection_delimiter = cell['race_horse']

##### the use of the float here is to make sure the result of the strike rate calculations returns as a decimal, otherwise python 2 rounds to the nearest integer! 

    user_numberofselections = float(re.findall(pattern4, user_delimiter)[0])

    user_numberofwinners = float(re.findall(pattern5, user_delimiter)[0])

    strikeratecalc1 = user_numberofwinners/user_numberofselections

    strikeratecalc2 = strikeratecalc1*100

##### Printing the results of the code at hand

    print "number of selections = ",user_numberofselections

    print "number of winners = ",user_numberofwinners

    print "Strike rate = ",strikeratecalc2,"%"

    print ""

getData()

此代码与其余代码一起返回：

number of selections =  112.0

number of winners =  21.0

Strike rate =  18.75 %

number of selections =  146.0

number of winners =  21.0

Strike rate =  14.3835616438 %

number of selections =  163.0

number of winners =  55.0

Strike rate =  33.7423312883 %

现在，此xmlload的结果表明，只有三个用户要解析，但是有第4个whos数据会读取

number of selections =  0

number of winners =  0

Strike rate =  0

出于我的目的，对于没有跟踪记录的用户，没有必要拉入用户统计信息，我该如何使代码跳过选择0的用户，或者至少使其不被零除的错误不会影响要在循环中运行的代码？

Answer 1

continue找到0时仅使用a 。user_numberofwinners = float(re.findall(pattern5, user_delimiter)[0])# if the number of winners is 0, go to the next row to avoid division by 0if user_numberofwinners == 0.0 : continue;