python - Pandas 不绘制代码。

Question

我是编码新手，正在尝试通过代码来理解 Quantopian 的讲座，但是当我在 PyCharm 中运行代码时，没有输出。有人可以告诉我发生了什么事并建议我如何解决这个问题吗？

下面是我的一段代码(2.7.13):

import numpy as np
import pandas as pd

import statsmodels
import statsmodels.api as sm
from statsmodels.tsa.stattools import coint
# just set the seed for the random number generator
np.random.seed(107)

import matplotlib.pyplot as plt

X_returns = np.random.normal(0, 1, 100) # Generate the daily returns
# sum them and shift all the prices up into a reasonable range
X = pd.Series(np.cumsum(X_returns), name='X') + 50
X.plot();

当我运行此命令时，唯一的输出是:“进程已完成，退出代码为 0”

Answer 1

只需在末尾添加 plt.show() 即可:

import numpy as np
import pandas as pd

import statsmodels
import statsmodels.api as sm
from statsmodels.tsa.stattools import coint
# just set the seed for the random number generator
np.random.seed(107)

import matplotlib.pyplot as plt

X_returns = np.random.normal(0, 1, 100) # Generate the daily returns
# sum them and shift all the prices up into a reasonable range
X = pd.Series(np.cumsum(X_returns), name='X') + 50
X.plot()
plt.show()