我是新的mac用户，是python的新用户。
我只需安装python 2.7和matplotlib并尝试运行此演示代码：
"""
Simple demo with multiple subplots.
"""
import numpy as np
import matplotlib.pyplot as plt
x1 = np.linspace(0.0, 5.0)
x2 = np.linspace(0.0, 2.0)
y1 = np.cos(2 * np.pi * x1) * np.exp(-x1)
y2 = np.cos(2 * np.pi * x2)
plt.subplot(2, 1, 1)
plt.plot(x1, y1, 'yo-')
plt.title('A tale of 2 subplots')
plt.ylabel('Damped oscillation')
plt.subplot(2, 1, 2)
plt.plot(x2, y2, 'r.-')
plt.xlabel('time (s)')
plt.ylabel('Undamped')
plt.show()
当我点击运行 - ＆gt;运行模块我收到此错误：
Traceback (most recent call last):
File "/Users/mehmetalinadigulec/Desktop/subplot_demo.py", line 4, in <module>
import numpy as np
ImportError: No module named numpy
我搜索了几个小时但无法修复它。
我编辑我的〜/ .bash_profile
# Setting PATH for Python 2.7
# The orginal version is saved in .bash_profile.pysave
PYTHONPATH="/Library/Python/2.7/site-packages:${PYTHONPATH}"
export PYTHONPATH
和结果
echo $PYHTONPATH
/Library/Python/2.7/site-packages: