我通过使用中的ssh命令在另一台机器上运行python脚本linux。我也运行了以下命令:
ssh
linux
source ~/.bashrc
登录另一台计算机后,为了在新计算机中定义正确的路径。即使我尝试通过定义后端来遵循此问题中的说明,也收到了运行以下python代码行的错误消息。
>>> import matplotlib >>> import pylab as plt >>> matplotlib.use('Agg') >>> import numpy as np >>> x=np.arange(0,2,0.001) >>> y=np.sin(x)**2+4*np.cos(x) >>> fig = plt.figure() >>> plt.plot(x,y,'r.')
错误讯息
This probably means that Tcl wasn't installed properly. Traceback (most recent call last): File "Systematic_Optimised.py", line 513, in <module> fig = plt.figure() File "/vol/anaconda/lib/python2.7/site-packages/matplotlib/pyplot.py", line 435, in figure **kwargs) File "/vol/anaconda/lib/python2.7/site-packages/matplotlib/backends/backend_qt4agg.py", line 47, in new_figure_manager return new_figure_manager_given_figure(num, thisFig) File "/vol/anaconda/lib/python2.7/site-packages/matplotlib/backends/backend_qt4agg.py", line 54, in new_figure_manager_given_figure canvas = FigureCanvasQTAgg(figure) File "/vol/anaconda/lib/python2.7/site-packages/matplotlib/backends/backend_qt4agg.py", line 72, in __init__ FigureCanvasQT.__init__(self, figure) File "/vol/aibn84/data2/zahra/anaconda/lib/python2.7/site-packages/matplotlib/backends/backend_qt4.py", line 68, in __init__ _create_qApp() File "/vol/anaconda/lib/python2.7/site-packages/matplotlib/backends/backend_qt5.py", line 138, in _create_qApp raise RuntimeError('Invalid DISPLAY variable') RuntimeError: Invalid DISPLAY variable
任何建议如何解决问题
您必须声明matplotlib.use('agg')之前import pylab as plt。
matplotlib.use('agg')
import pylab as plt