python3.6散点图出不来，输出结果：matplotlib.lines.Line2D object at 0x0
代码：import os
import matplotlib.pyplot as plt
import numpy as np
print("散点图")
x = np.linspace(0,10,30)
y = np.sin(x)
plt.plot(x,y,'bo',ms =5)
print("散点图2222")
输出结果：
散点图
散点图2222
[<matplotlib.lines.Line2D object at 0x0000017870833518>]
请求支持，谢谢！
代码画完图后要展示就后加一句 plt.show() 谢谢 支持; 更改下，可以显示图了，但提示：如后面，这个怎么处理呀？
import numpy as np
import matplotlib.pyplot as plt
x = np.linspace(0,10,30)
y = np.sin(x)
plt.plot(x,y,'bo',label="男生",ms =5)
plt.legend()
plt.show()
/////////////////////////////////////////////////////////////////////////////
Warning (from warnings module):
File "C:\Users\Administrator\AppData\Local\Programs\Python\Python36\lib\site-packages\matplotlib\backends\backend_agg.py", line 238
font.set_text(s, 0.0, flags=flags)
RuntimeWarning: Glyph 30007 missing from current font.
Warning (from warnings module):
File "C:\Users\Administrator\AppData\Local\Programs\Python\Python36\lib\site-packages\matplotlib\backends\backend_agg.py", line 238
font.set_text(s, 0.0, flags=flags)
RuntimeWarning: Glyph 29983 missing from current font.
Warning (from warnings module):
File "C:\Users\Administrator\AppData\Local\Programs\Python\Python36\lib\site-packages\matplotlib\backends\backend_agg.py", line 201
font.set_text(s, 0, flags=flags)
RuntimeWarning: Glyph 30007 missing from current font.
Warning (from warnings module):
File "C:\Users\Administrator\AppData\Local\Programs\Python\Python36\lib\site-packages\matplotlib\backends\backend_agg.py", line 201
font.set_text(s, 0, flags=flags)
RuntimeWarning: Glyph 29983 missing from current font.
import os
import matplotlib.pyplot as plt
import numpy as np
print("散点图")
x = np.linspace(0,10,30)
y = np.sin(x)
plt.plot(x,y,'bo',ms =5)
print("散点图2222")
plt.show()
如楼上所说，价格plt.show() 就能出来了。 z5560636 发表于 2021-9-24 09:31
如楼上所说，价格plt.show() 就能出来了。
谢谢，是出图了，但是出现了很多警告呢：
Warning (from warnings module):
File "C:\Users\Administrator\AppData\Local\Programs\Python\Python36\lib\site-packages\matplotlib\backends\backend_agg.py", line 238
font.set_text(s, 0.0, flags=flags)
RuntimeWarning: Glyph 30007 missing from current font.
Warning (from warnings module):
File "C:\Users\Administrator\AppData\Local\Programs\Python\Python36\lib\site-packages\matplotlib\backends\backend_agg.py", line 238
font.set_text(s, 0.0, flags=flags)
RuntimeWarning: Glyph 29983 missing from current font.
Warning (from warnings module):
File "C:\Users\Administrator\AppData\Local\Programs\Python\Python36\lib\site-packages\matplotlib\backends\backend_agg.py", line 201
font.set_text(s, 0, flags=flags)
RuntimeWarning: Glyph 30007 missing from current font.
Warning (from warnings module):
File "C:\Users\Administrator\AppData\Local\Programs\Python\Python36\lib\site-packages\matplotlib\backends\backend_agg.py", line 201
font.set_text(s, 0, flags=flags)
RuntimeWarning: Glyph 29983 missing from current font.
wideband 发表于 2021-9-24 09:29
谢谢 支持; 更改下，可以显示图了，但提示：如后面，这个怎么处理呀？
import numpy as np
应该是因为有中文乱码了。可以把男孩改成boy，避免出现中文就行
或者增加以下代码
import matplotlib as mpl
mpl.rcParams['font.sans-serif'] = ['KaiTi', 'SimHei', 'FangSong']# 设置汉字字体
mpl.rcParams['font.size'] = 12# 字体大小
mpl.rcParams['axes.unicode_minus'] = False# 正常显示负号 小圣呀 发表于 2021-9-24 09:44
应该是因为有中文乱码了。可以把男孩改成boy，避免出现中文就行
或者增加以下代码
谢谢你的支持，修改了，还是不行，提示如下：
import os
import numpy as np
import matplotlib.pyplot as plt
import matplotlib as mpl
mpl.rcParams['font.san-serif']=['KaiTi','SimHei','FangSong']
mpl.rcParams['font.size']=12
mpl.rcParams['axes.unicode_minus'] = False
x = np.linspace(0,10,30)
y = np.sin(x)
plt.plot(x,y,'bo',label="man",ms =5)
plt.legend()
plt.show()
//////////////////////////////////////////////////////////////////////////
import os
import numpy as np
import matplotlib.pyplot as plt
import matplotlib as mpl
mpl.rcParams['font.san-serif']=['KaiTi','SimHei','FangSong']
mpl.rcParams['font.size']=12
mpl.rcParams['axes.unicode_minus'] = False
x = np.linspace(0,10,30)
y = np.sin(x)
plt.plot(x,y,'bo',label="man",ms =5)
plt.legend()
plt.show() //////////////////////////////////后面的提示警告如下////////////////////////////////
Traceback (most recent call last):
File "C:\Users\Administrator\AppData\Local\Programs\Python\Python36\lib\site-packages\matplotlib\__init__.py", line 677, in __setitem__
cval = self.validate(val)
KeyError: 'font.san-serif'
The above exception was the direct cause of the following exception:
Traceback (most recent call last):
File "C:/Users/Administrator/Desktop/sandian.py", line 6, in <module>
mpl.rcParams['font.san-serif']=['KaiTi','SimHei','FangSong']
File "C:\Users\Administrator\AppData\Local\Programs\Python\Python36\lib\site-packages\matplotlib\__init__.py", line 684, in __setitem__
f"a list of valid parameters)") from err
KeyError: 'font.san-serif is not a valid rc parameter (see rcParams.keys() for a list of valid parameters)' 现在可以了，我删除了如下，其他保留了，谢谢！
import matplotlib as mpl
mpl.rcParams['font.san-serif']=['KaiTi','SimHei','FangSong']
mpl.rcParams['font.size']=12
mpl.rcParams['axes.unicode_minus'] = False wideband 发表于 2021-9-24 10:08
现在可以了，我删除了如下，其他保留了，谢谢！
import matplotlib as mpl
你这个mpl.rcParams['font.sans-serif']=['KaiTi','SimHei','FangSong']，sans掉了个s……
输入中文字是可以的，再试试？
import os
import numpy as np
import matplotlib.pyplot as plt
import matplotlib as mpl
mpl.rcParams['font.sans-serif']=['KaiTi','SimHei','FangSong']
mpl.rcParams['font.size']=12
mpl.rcParams['axes.unicode_minus'] = False
x = np.linspace(0,10,30)
y = np.sin(x)
plt.plot(x,y,'bo',label="男孩",ms =5)
plt.legend()
plt.show()
小圣呀 发表于 2021-9-24 10:21
你这个mpl.rcParams['font.sans-serif']=['KaiTi','SimHei','FangSong']，sans掉了个s……
输入中文字 ...
你是谁呀？是小甲鱼老师吗？ 你这么牛，谢谢你，安全OK了。
import os
import numpy as np
import matplotlib.pyplot as plt
import matplotlib as mpl
mpl.rcParams['font.sans-serif']=['KaiTi','SimHei','FangSong']
mpl.rcParams['font.size']=12
mpl.rcParams['axes.unicode_minus']=False
x = np.linspace(0,10,30)
y = np.sin(x)
plt.plot(x,y,'bo',label="man",ms =5)
plt.legend()
plt.show()
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