| from math import sqrt |
| |
| |
| class URLResults(object): |
| |
| def __init__(self, totaltime=0, num_urls=0, std_dev=0.0): |
| self.time = totaltime |
| self.count = num_urls |
| self.std_dev_counter = std_dev |
| |
| def __add__(self, other): |
| new_time = self.time + other.time |
| new_count = self.count + other.count |
| new_std_dev_counter = self.std_dev_counter + other.std_dev_counter |
| return URLResults(new_time, new_count, new_std_dev_counter) |
| |
| @property |
| def mean(self): |
| if self.count: |
| return self.time / float(self.count) |
| else: |
| return 0 |
| |
| @property |
| def coef_variance(self): |
| n = self.count |
| if n <= 1: |
| return 0 |
| std_dev = sqrt((self.std_dev_counter / float(n - 1)) - (n / float(n - 1)) * (self.mean ** 2)) |
| return (std_dev * 100.0) / self.mean |
| |
| def print_results(self, url, results_format_str): |
| str_time = self._format_time(self.mean) |
| print(results_format_str.format(time=str_time.ljust(12), var="{0:.2f}%".format(self.coef_variance).ljust(10), url=url)) |
| |
| def _format_time(self, time): |
| return "{} ms".format(int(time)) |
