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workaround for matplotlib on X-less remote logins

Merged David Keitel requested to merge (removed):nox into master
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@@ -6,7 +6,17 @@ import glob
@@ -6,7 +6,17 @@ import glob
import subprocess
import subprocess
import numpy as np
import numpy as np
import matplotlib.pyplot as plt
 
# workaround for matplotlib on X-less remote logins
 
if os.environ.has_key('DISPLAY'):
 
import matplotlib.pyplot as plt
 
else:
 
logging.info('No $DISPLAY environment variable found, \
 
so importing matplotlib.pyplot with non-interactive "Agg" backend.')
 
import matplotlib
 
matplotlib.use('Agg')
 
import matplotlib.pyplot as plt
 
import scipy.special
import scipy.special
import scipy.optimize
import scipy.optimize
import lal
import lal
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