使用elapsed获取响应时间
1、elapsed介绍官方文档：http://cn.python-requests.org/zh_CN/latest/api.html?highlight=elapsed#requests.Response.elapsed
查看帮助： import requeststest = requests.get('https://www.qq.com')print(help(test.elapsed)) # 查看帮助 结果显示： Help on timedelta object:class timedelta(builtins.object) | Difference between two datetime values. | | timedelta(days=0, seconds=0, microseconds=0, milliseconds=0, minutes=0, hours=0, weeks=0) | | All arguments are optional and default to 0. | Arguments may be integers or floats, and may be positive or negative. | | Methods defined here: | | __abs__(self, /) | abs(self) | | __add__(self, value, /) | Return self+value. | | __bool__(self, /) | self != 0 | | __divmod__(self, value, /) | Return divmod(self, value). | | __eq__(self, value, /) | Return self==value. | | __floordiv__(self, value, /) | Return self//value. | | __ge__(self, value, /) | Return self>=value. | | __getattribute__(self, name, /) | Return getattr(self, name). | | __gt__(self, value, /) | Return self>value. | | __hash__(self, /) | Return hash(self). | | __le__(self, value, /) | Return self<=value. | | __lt__(self, value, /) | Return self<value. | | __mod__(self, value, /) | Return self%value. | | __mul__(self, value, /) | Return self*value. | | __ne__(self, value, /) | Return self!=value. | | __neg__(self, /) | -self | | __pos__(self, /) | +self | | __radd__(self, value, /) | Return value+self. | | __rdivmod__(self, value, /) | Return divmod(value, self). | | __reduce__(...) | __reduce__() -> (cls, state) | | __repr__(self, /) | Return repr(self). | | __rfloordiv__(self, value, /) | Return value//self. | | __rmod__(self, value, /) | Return value%self. | | __rmul__(self, value, /) | Return value*self. | | __rsub__(self, value, /) | Return value-self. | | __rtruediv__(self, value, /) | Return value/self. | | __str__(self, /) | Return str(self). | | __sub__(self, value, /) | Return self-value. | | __truediv__(self, value, /) | Return self/value. | | total_seconds(...) | Total seconds in the duration. | | ---------------------------------------------------------------------- | Static methods defined here: | | __new__(*args, **kwargs) from builtins.type | Create and return a new object. See help(type) for accurate signature. | | ---------------------------------------------------------------------- | Data descriptors defined here: | | days | Number of days. | | microseconds | Number of microseconds (>= 0 and less than 1 second). | | seconds | Number of seconds (>= 0 and less than 1 day). | | ---------------------------------------------------------------------- | Data and other attributes defined here: | | max = datetime.timedelta(days=999999999, seconds=86399, microseconds=9... | | min = datetime.timedelta(days=-999999999) | | resolution = datetime.timedelta(microseconds=1) 内置方法介绍 import requeststest = requests.get('https://www.qq.com')help(test.elapsed)print(test.elapsed.seconds)print(test.elapsed.days)print(test.elapsed.min)print(test.elapsed.max)print(test.elapsed.total_seconds())print(test.elapsed.microseconds)print(test.elapsed.resolution)返回结果：00-999999999 days, 0:00:00999999999 days, 23:59:59.9999990.071056710560:00:00.000001 总结网上提出获取接口响应时间均为：test.elapsed.microseconds/(1000*1000)，但是该种方式有个缺点（当接口的响应时间大于1s时，仅会截取后面的小数位）
所以推荐使用：test.elapsed.total_seconds()，准确性较高，单位为s
注：1 秒(second)[s] = 1000 毫秒millisecond[ms] = 1000000 微秒microsecond[us]