matplotlib不會出現劇情

Question

我使用python v3.6與pycharm和anaconda。我試圖運行下面的代碼來繪製一個簡單的正弦波;

import numpy as np 
import matplotlib.pyplot as plt 

# Generate a sequence of numbers from -10 to 10 with 100 steps in between 
x = np.linspace(-10, 10, 100) 
# Create a second array using sine 
y = np.sin(x) 
# The plot function makes a line chart of one array against another 
plt.plot(x, y, marker="x") 
pass 

該代碼運行平穩無錯，但不出現任何情節。我如何讓情節出現？

Answer 1

最後缺少plt.show()。

import numpy as np 
import matplotlib.pyplot as plt 

# Generate a sequence of numbers from -10 to 10 with 100 steps in between 
x = np.linspace(-10, 10, 100) 
# Create a second array using sine 
y = np.sin(x) 
# The plot function makes a line chart of one array against another 
plt.plot(x, y, marker="x") 
plt.show() 
pass 

，或者，如果你想將其保存到一個文件

plt.savefig("my_file.png")