解释img_name, label = self.env[index].strip().split(',')
时间: 2023-06-02 15:01:30 浏览: 75
这行代码的作用是从self.env列表中获取指定索引index的元素(假设该元素是一个字符串),并将其按逗号分割为两个部分,分别赋值给img_name和label两个变量。
具体解释如下:
- strip()方法用于移除字符串开头和结尾的空格和换行符等空白字符。
- split(',')方法用于将字符串按照逗号分割成一个列表,其中逗号是分割符。
- 因为split(',')返回的是一个列表,所以可以使用列表解包的方式将列表中的元素分别赋值给img_name和label两个变量。
相关问题
conda create -n env_name scipy=0.17.3 -y
命令 `conda create -n env_name scipy=0.17.3 -y` 的作用是在Anaconda或Miniconda环境中创建一个新的虚拟环境(env_name),并在这个新环境中安装特定版本的scipy库(version 0.17.3)。解释一下各个部分:
- **conda create**: 这是用于创建新环境的Conda命令。
- **-n env_name**: `-n` 后面紧跟着的是你要创建的新环境的名称。例如,如果你输入 `myenv`,则会创建一个名为 "myenv" 的新环境。
- **scipy=0.17.3**: 这表示你想要在新环境中安装scipy库,并且指定了具体版本为0.17.3。这里 `scipy` 是包名,`0.17.3` 是版本号。
- **-y**: `--yes` 或 `-y` 参数意味着Conda在询问是否确认安装时,默认选择 "yes",即直接执行安装操作而无需用户交互确认。
执行这个命令后,如果一切顺利,你将在指定位置有一个新的包含scipy 0.17.3版本的虚拟环境。要激活这个新环境,可以使用 `conda activate env_name` 命令。
def connect(self): s = self.get_slice() if self.connected: return # increment connect attempt self.stat_collector.incr_connect_attempt(self) if s.is_avaliable(): s.connected_users += 1 self.connected = True print(f'[{int(self.env.now)}] Client_{self.pk} [{self.x}, {self.y}] connected to slice={self.get_slice()} @ {self.base_station}') return True else: self.assign_closest_base_station(exclude=[self.base_station.pk]) if self.base_station is not None and self.get_slice().is_avaliable(): # handover self.stat_collector.incr_handover_count(self) elif self.base_station is not None: # block self.stat_collector.incr_block_count(self) else: pass # uncovered print(f'[{int(self.env.now)}] Client_{self.pk} [{self.x}, {self.y}] connection refused to slice={self.get_slice()} @ {self.base_station}') return False def disconnect(self): if self.connected == False: print(f'[{int(self.env.now)}] Client_{self.pk} [{self.x}, {self.y}] is already disconnected from slice={self.get_slice()} @ {self.base_station}') else: slice = self.get_slice() slice.connected_users -= 1 self.connected = False print(f'[{int(self.env.now)}] Client_{self.pk} [{self.x}, {self.y}] disconnected from slice={self.get_slice()} @ {self.base_station}') return not self.connected def start_consume(self): s = self.get_slice() amount = min(s.get_consumable_share(), self.usage_remaining) # Allocate resource and consume ongoing usage with given bandwidth s.capacity.get(amount) print(f'[{int(self.env.now)}] Client_{self.pk} [{self.x}, {self.y}] gets {amount} usage.') self.last_usage = amount def release_consume(self): s = self.get_slice() # Put the resource back if self.last_usage > 0: # note: s.capacity.put cannot take 0 s.capacity.put(self.last_usage) print(f'[{int(self.env.now)}] Client_{self.pk} [{self.x}, {self.y}] puts back {self.last_usage} usage.') self.total_consume_time += 1 self.total_usage += self.last_usage self.usage_remaining -= self.last_usage self.last_usage = 0中的资源分配
要将这些函数修改为最小容量的资源分配,需要进行以下更改:
1. 在 `is_avaliable` 函数中,将 `bandwidth_next` 的计算方式修改为 `real_cap / (self.connected_users + 1) >= self.bandwidth_min`,即下一个用户的带宽大于等于最小容量。
2. 在 `start_consume` 函数中,将 `amount` 的计算方式修改为 `min(s.get_consumable_share(), self.usage_remaining, self.bandwidth_min)`,即需要分配的资源量为可用资源、剩余需求和最小容量的最小值。
修改后的代码如下:
```
def connect(self):
s = self.get_slice()
if self.connected:
return
# increment connect attempt
self.stat_collector.incr_connect_attempt(self)
if s.is_avaliable():
s.connected_users += 1
self.connected = True
print(f"[{int(self.env.now)}] Client_{self.pk} [{self.x}, {self.y}] connected to slice={self.get_slice()} @ {self.base_station}")
return True
else:
self.assign_closest_base_station(exclude=[self.base_station.pk])
if self.base_station is not None and self.get_slice().is_avaliable():
# handover
self.stat_collector.incr_handover_count(self)
elif self.base_station is not None:
# block
self.stat_collector.incr_block_count(self)
else:
pass # uncovered
print(f"[{int(self.env.now)}] Client_{self.pk} [{self.x}, {self.y}] connection refused to slice={self.get_slice()} @ {self.base_station}")
return False
def disconnect(self):
if not self.connected:
print(f"[{int(self.env.now)}] Client_{self.pk} [{self.x}, {self.y}] is already disconnected from slice={self.get_slice()} @ {self.base_station}")
else:
slice = self.get_slice()
slice.connected_users -= 1
self.connected = False
print(f"[{int(self.env.now)}] Client_{self.pk} [{self.x}, {self.y}] disconnected from slice={self.get_slice()} @ {self.base_station}")
return not self.connected
def start_consume(self):
s = self.get_slice()
amount = min(s.get_consumable_share(), self.usage_remaining, self.bandwidth_min)
s.capacity.get(amount)
print(f"[{int(self.env.now)}] Client_{self.pk} [{self.x}, {self.y}] gets {amount} usage.")
self.last_usage = amount
def release_consume(self):
s = self.get_slice()
if self.last_usage > 0:
s.capacity.put(self.last_usage)
print(f"[{int(self.env.now)}] Client_{self.pk} [{self.x}, {self.y}] puts back {self.last_usage} usage.")
self.total_consume_time += 1
self.total_usage += self.last_usage
self.usage_remaining -= self.last_usage
self.last_usage = 0
def is_avaliable(self):
real_cap = min(self.init_capacity, self.bandwidth_max)
return real_cap / (self.connected_users + 1) >= self.bandwidth_min
```