2023-7-13 myluzh
Python
0x01 ndarray与list运行时长对比
import random
import numpy as np
import timeit
a = []
for i in range(100000000):
a.append(random.random())
def sum_list():
return sum(a)
def sum_numpy():
b = np.array(a)
return np.sum(b)
time_list = timeit.timeit(sum_list, number=1)
time_numpy = timeit.timeit(sum_numpy, number=1)
print("List sum time:", time_list)
print("Numpy sum time:", time_numpy)
List sum time: 6.816154757
Numpy sum time: 4.999972694
0x02 ndarray的优势
（1）ndarray在存储数据的时候，数据...
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标签: numpy ndarray
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2023-7-13 myluzh
Python
0x01 散点图
import matplotlib.pyplot as plt
import random
# 生成数据
num_points = 1000
x = [random.uniform(0, 10) for i in range(1000)]
y = [random.uniform(0, 10) for i in range(1000)]
# 绘制散点图
plt.scatter(x, y, s=5, alpha=0.5)
# 添加标题和标签
plt.title('Scatter Plot Example')
plt.xlabel('X')
plt.ylabel('Y')
# 显示图形
plt.show()
0x02 柱状图
import matplotlib.pyplot as plt
# 柱状图的数据
categories = ['A', 'B', 'C', 'D', 'E']
values = [15, 25, 10, 20, 30]
# 创建一个新的图形
fig, ax = plt.subplots()
# 绘制柱状图
ax.bar(categories, values)
# 设置图形...
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标签: python matplotlib 散点图 柱状图
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2023-7-13 myluzh
Python
0x01 图像
0x02 代码
import matplotlib.pyplot as plt
import random
# 支持中文
from pylab import mpl
mpl.rcParams['font.sans-serif'] = ['Arial Unicode MS']
mpl.rcParams['axes.unicode_minus'] = False # 用来解决不能使用汉字问题，需要导入matplotlib
# 准备x y 数据
x = range(1, 31)
y_hangzhou = [random.uniform(35, 42) for i in x]
y_beijing = [random.uniform(34, 39) for i in x]
# nrows/ncols设置成有几行几列的坐标系。返回fig：图对象，axes：返回相应数量的坐标系
fig, axes = plt.subplots(nrows=1, ncols=2, figsize=(20, 8), dpi=50)
axes[0].plot(x, y_hangzhou, color="b", ...
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标签: python matplotlib
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2023-7-13 myluzh
Python
0x01 图像
0x02 代码
import matplotlib.pyplot as plt
import random
# 支持中文
from pylab import mpl
mpl.rcParams['font.sans-serif'] = ['Arial Unicode MS']
mpl.rcParams['axes.unicode_minus'] = False # 用来解决不能使用汉字问题，需要导入matplotlib
# 准备x y 数据
x = range(1, 31)
y_hangzhou = [random.uniform(35, 42) for i in x]
y_beijing = [random.uniform(34, 39) for i in x]
# 创建画布
plt.figure(figsize=(10, 5), dpi=70)
# 绘制图像
plt.plot(x, y_hangzhou, color="b", linestyle='-', label='上海')
plt.plot(x, y_beijing, color="r", linestyle...
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标签: python matplotlib
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2023-7-12 myluzh
Kubernetes
0x00 架构图
0x01 MasterNode
*api server：集群对外的统一入口，以restful方式，交给etcd进行存储。
*scheduler：节点调度，选择node节点应用部署。
*controller-manager：处理集群常规后台任务，一个资源对应一个控制器。
*etcd：存储系统，用于保存集群相关数据。
0x02 WorkerNode
*kubelet：master在worker创建的agent，管理本机容器生命周期的各种操作。
*kube-proxy：提供网络代理，负载均衡等操作。
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标签: k8s 集群 架构 组件
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2023-7-9 myluzh
OpenVPN
0x01 install.sh
#!/bin/bash
#
# https://github.com/hwdsl2/openvpn-install
#
# Based on the work of Nyr and contributors at:
# https://github.com/Nyr/openvpn-install
#
# Copyright (c) 2022-2023 Lin Song <linsongui@gmail.com>
# Copyright (c) 2013-2023 Nyr
#
# Released under the MIT License, see the accompanying file LICENSE.txt
# or https://opensource.org/licenses/MIT
exiterr() { echo "Error: $1" >&2; exit 1; }
exiterr2() { exiterr "'apt-get install' failed."; }
exiterr3() { exiterr "'y...
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标签: openvpn
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