单独运行HTMLTestRunner，报错

[sky1984]

self.passrate = str("%.2f%%" % (float(result.success_count) / float(result.success_count + result.failure_count + result.error_count) * 100))

[sky1984]

"D:\Program Files\Python37\python.exe" "D:/Program Files/Python37/Projects/DemoUI-master/package/HTMLTestRunner.py"
Traceback (most recent call last):
File "D:/Program Files/Python37/Projects/DemoUI-master/package/HTMLTestRunner.py", line 961, in
main(module=None)
File "D:\Program Files\Python37\lib\unittest\main.py", line 101, in init
self.runTests()
File "D:/Program Files/Python37/Projects/DemoUI-master/package/HTMLTestRunner.py", line 952, in runTests
unittest.TestProgram.runTests(self)
File "D:\Program Files\Python37\lib\unittest\main.py", line 271, in runTests
self.result = testRunner.run(self.test)
File "D:/Program Files/Python37/Projects/DemoUI-master/package/HTMLTestRunner.py", line 746, in run
self.generateReport(test, result)
File "D:/Program Files/Python37/Projects/DemoUI-master/package/HTMLTestRunner.py", line 796, in generateReport
report_attrs = self.getReportAttributes(result)
File "D:/Program Files/Python37/Projects/DemoUI-master/package/HTMLTestRunner.py", line 784, in getReportAttributes
self.passrate = str("%.2f%%" % (float(result.success_count) / float(result.success_count + result.failure_count + result.error_count) * 100))
ZeroDivisionError: float division by zero