Run with Python 3.6 it’s ok.
Run with Python 2.7 will crash.

Matplotlib crash on Pythonista V3.2.

(Python 2.7 iOS 11.2.5 iPad Pro 9.7 and iPhone X)

etc: Pythonista/Examples/Plotting/3D Plot Demo.py

@mikael Great Job. Thanks

iPhone X (Pythonista V3.2 , Python 2.7)

(1000 * 1000),Total Time:6.435
math.sin:2.250
numpy.sin1:1.697
numpy.sin2:0.111

all devices run same code.

import numpy as np
import time
import math

bt = time.time()
n = 1000
for i in range(1):
    a = np.random.uniform(low=0., high=1., size=(n, n)).astype(np.float32)
    b = np.random.uniform(low=0., high=1., size=(n, n)).astype(np.float32)
    a = a.dot(b)
print ('(%d * %d),Total Time:%.3f'%(n,n,time.time()-bt))

start = time.clock()
x = [i * 0.001 for i in xrange(10000000)]
for i, t in enumerate(x):
    x[i] = math.sin(t)
print ("math.sin:%.3f"%(time.clock() - start))

start = time.clock()
y = [i * 0.001 for i in xrange(10000000)]
y = np.array(y)
print ("numpy.sin1:%.3f"%(time.clock() - start))
start = time.clock()
np.sin(y,y)
print ("numpy.sin2:%.3f"%(time.clock() - start))


'''
* ipad Pro 9.7 
(1000 * 1000),Total Time:8.840
math.sin: 3.04883
numpy.sin: 2.668903 (2.517,0.177)

=====Android Termux=====
(1000,1000) 0.627
math.sin: 33.899
numpy.sin: 14.953

=====MacBook Air 13 @2010====
(1000,1000) 0.234
math.sin: 8.95
numpy.sin: 4.71 (3.88,0.48)

====Microsoft Surface 3 @2015====
(1000,1000) 0.203
math.sin: 12.739
numpy.sin: (5.419,0.380)

Why iOS numpy (1000,1000) very slow ???

thanks.

Del the enum folder,and restart, all ok.

Upgrade to V3.2.

On iPad Pro 9.7 (iOS V11.2.1). When start app. this error message show on console:

Traceback (most recent call last):
  File "/var/containers/Bundle/Application/A44685BD-F481-4B46-A86F-DF888CAC5D0D/Pythonista3.app/Frameworks/Py3Kit.framework/pykit_startup.py", line 51, in <module>
    main()
  File "/var/containers/Bundle/Application/A44685BD-F481-4B46-A86F-DF888CAC5D0D/Pythonista3.app/Frameworks/Py3Kit.framework/pykit_startup.py", line 47, in main
    import importcompletion
  File "/var/containers/Bundle/Application/A44685BD-F481-4B46-A86F-DF888CAC5D0D/Pythonista3.app/Frameworks/Py3Kit.framework/pylib/importcompletion.py", line 26, in <module>
    import imp
  File "/var/containers/Bundle/Application/A44685BD-F481-4B46-A86F-DF888CAC5D0D/Pythonista3.app/Frameworks/Py3Kit.framework/pylib/imp.py", line 28, in <module>
    import tokenize
  File "/var/containers/Bundle/Application/A44685BD-F481-4B46-A86F-DF888CAC5D0D/Pythonista3.app/Frameworks/Py3Kit.framework/pylib/tokenize.py", line 34, in <module>
    import re
  File "/var/containers/Bundle/Application/A44685BD-F481-4B46-A86F-DF888CAC5D0D/Pythonista3.app/Frameworks/Py3Kit.framework/pylib/re.py", line 143, in <module>
    class RegexFlag(enum.IntFlag):
AttributeError: module 'enum' has no attribute 'IntFlag'

And when console run: import re, the pythonista crash.

iPad Pro 9.7 256G iOS 11.1

Python 2.7

Pystone(1.1.1) time for 50000 passes = 0.346581
This machine benchmarks at 144266 pystones/second

Python 3.5

Pystone(1.1.1) time for 50000 passes = 0.427856
This machine benchmarks at 116862 pystones/second

@zrzka Thanks,it's work.

can add cmd+up cmd+down to page up and page down?