Python_matplotlib line chart notes

1. The basic content of the line chart drawing is as follows, and the function depends on the comment after the code.

Second, the rest of the functions can be accessed by visiting the function introduction or matplotlib official website, the latter can be modified directly on the template, which is very convenient.
(Note: The address where I call the font is in my computer, if the path is different, I need to modify it.)

Three, the code block

(1) Question

(2) Code

from matplotlib import pyplot as plt
from matplotlib import font_manager

my_font = font_manager.FontProperties(fname=r"G:\Python_Learning\untitled\test\simsun.ttc")  # 调取中文字体

plt.figure(figsize=(20, 8), dpi=80)  # 调图表大小

y_1 = [1, 0, 1, 1, 2, 4, 3, 2, 3, 4, 4, 5, 6, 5, 4, 3, 3, 1, 1, 1]  # 这些是数据，可供修改
x = list(range(11, 31))
y_2 = [1, 0, 3, 1, 2, 2, 3, 3, 2, 1, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1]

plt.plot(x, y_1,)  # 绘图
plt.plot(x, y_2, color="purple", linestyle=":", linewidth=4)  # 这里演示一下调折线颜色、宽度和样式

plt.plot(x, y_1, label='自己')  # 画示意
plt.plot(x, y_2, label='同桌')
plt.legend(prop=my_font, loc="upper left")  # 只有这里显示中文用prop，其余都是用fontproperties。loc是改图例位置

_x_ticks_lables = ["{}岁".format(i) for i in x]  # 设置坐标的字符串
plt.xticks(x[::1], _x_ticks_lables, rotation=45, fontproperties=my_font)  # 设置坐标刻度和字符串

plt.xlabel("年龄", fontproperties=my_font)  # 贴轴标题
plt.ylabel("交往女朋友数量/个", fontproperties=my_font)
plt.title("海王是怎样炼成的", fontproperties=my_font)

# 绘制网格
plt.grid(alpha=0.4)  # alpha是透明度
plt.show()
plt.savefig("line_graph.png")
"""
很多其余的修改都可以参考源码哦，直接ctrl点击函数就可以了
还有matplotlib官网上有很多代码和图，可以参考图去找代码 matplotlib.org
"""
（3）示意图