I'm trying to use a cairo.TeeSurface (pycairo version '1.21.0') to redirect input to multiple surfaces, but I cannot make it work, here is my code:
>>> import cairo
>>> s1 = cairo.ImageSurface(cairo.FORMAT_ARGB32, 500,500)
>>> s2 = cairo.ImageSurface(cairo.FORMAT_ARGB32, 500,500)
>>> s3 = cairo.ImageSurface(cairo.FORMAT_ARGB32, 500,500)
>>> s = cairo.TeeSurface(s1)
>>> s.add(s2)
>>> s.add(s3)
>>> c = cairo.Context(s)
After above iniziatilation if I try to draw a line I get an error:
>>> c.rel_line_to(100,100)
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
cairo.Error: no current point defined
I tried to set explicitly a point but I get the same error:
>>> c.move_to(10,10)
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
cairo.Error: no current point defined
For sure I must have misunderstood something, any clue would be appreciated.
Related
I want to image classification with pyspark but
spark_model = sparkdn.fit(train)
gives
PythonException:
An exception was thrown from the Python worker. Please see the stack trace below.
Traceback (most recent call last):
File "/home/esra/anaconda3/envs/env/lib/python3.9/site-packages/sparkdl/image/imageIO.py", line 158, in resizeImageAsRow
imgAsArray = imageStructToArray(imgAsRow)
File "/home/esra/anaconda3/envs/env/lib/python3.9/site-packages/sparkdl/image/imageIO.py", line 121, in imageStructToArray
imType = imageType(imageRow)
File "/home/esra/anaconda3/envs/env/lib/python3.9/site-packages/sparkdl/image/imageIO.py", line 111, in imageType
return sparkModeLookup[imageRow.mode]
KeyError: 0
Any suggestion? Thanks
I am trying to get the expected value of a NumPy array but I am running into a problem when I pass my array into the function here is an example of what is happening:
a = np.ones(10)
stats.rv_continuous.expect(args=a)
I get this error:
Traceback (most recent call last):
File "<pyshell#3>", line 1, in <module>
stats.rv_continuous.expect(args=a)
TypeError: expect() missing 1 required positional argument: 'self'
If I try stats.rv_continuous.expect(a) , I get this error:
'numpy.ndarray' object has no attribute '_argcheck'
Can someone tell me how to get scipy.stats to work with an array?
update:
following bob's comment I changed the code to:
st=stats.rv_continuous()
ev = st.expect(args=signal_array)
print(ev)
where signal_array is a numpy array. However I now get this error:
Traceback (most recent call last):
File "C:\Users\...\OneDrive\Área de Trabalho\TickingClock\Main.py", line 35, in <module>
ev = st.expect(args=signal_array)
File "C:\Users\...\AppData\Local\Programs\Python\Python39\lib\site-packages\scipy\stats\_distn_infrastructure.py", line 2738, in expect
vals = integrate.quad(fun, lb, ub, **kwds)[0] / invfac
File "C:\Users\...\AppData\Local\Programs\Python\Python39\lib\site-packages\scipy\integrate\quadpack.py", line 351, in quad
retval = _quad(func, a, b, args, full_output, epsabs, epsrel, limit,
File "C:\Users\...\AppData\Local\Programs\Python\Python39\lib\site-packages\scipy\integrate\quadpack.py", line 465, in _quad
return _quadpack._qagie(func,bound,infbounds,args,full_output,epsabs,epsrel,limit)
File "C:\Users\...\AppData\Local\Programs\Python\Python39\lib\site-packages\scipy\stats\_distn_infrastructure.py", line 2722, in fun
return x * self.pdf(x, *args, **lockwds)
File "C:\Users\...\AppData\Local\Programs\Python\Python39\lib\site-packages\scipy\stats\_distn_infrastructure.py", line 1866, in pdf
args, loc, scale = self._parse_args(*args, **kwds)
TypeError: _parse_args() got multiple values for argument 'loc'
Following the examples on https://networkx.github.io/documentation/stable/reference/drawing.html, I tried the following code:
import networkx as nx
G = nx.complete_graph(5)
A = nx.nx_agraph.to_agraph(G)
H = nx.nx_agraph.from_agraph(A)
I get a RuntimeError as follows:
H = nx.nx_agraph.from_agraph(A)
Traceback (most recent call last):
File "/home/nom/anaconda3/envs/wcats/lib/python3.7/site-packages/pygraphviz/agraph.py", line 1750, in iteritems
ah = gv.agnxtattr(self.handle, self.type, ah)
StopIteration: agnxtattr
The above exception was the direct cause of the following exception:
Traceback (most recent call last):
File "<ipython-input-10-19c378da806e>", line 1, in <module>
H = nx.nx_agraph.from_agraph(A)
File "/home/nom/anaconda3/envs/wcats/lib/python3.7/site-packages/networkx/drawing/nx_agraph.py", line 85, in from_agraph
N.graph.update(A.graph_attr)
File "/home/nom/anaconda3/envs/wcats/lib/python3.7/site-packages/pygraphviz/agraph.py", line 1740, in keys
return list(self.__iter__())
File "/home/nom/anaconda3/envs/wcats/lib/python3.7/site-packages/pygraphviz/agraph.py", line 1743, in __iter__
for (k, v) in self.iteritems():
RuntimeError: generator raised StopIteration
This error is so basic that I suspect there's a problem with the package itself. Any suggestions on how I can try to troubleshoot this one?
Hello I am trying to use typed List in numba v46.0
>>> from numba.typed import List
>>> from numba import types
>>> mylist = List.empty_list(item_type=types.Tuple((types.f8, types.f8)))
>>> mylist2 = List.empty_list(item_type=types.List(dtype=types.Tuple((types.f8, types.f8))))
>>> mylist2.append(mylist)
but I got the following error, I am wondering how to fix it?
Traceback (most recent call last): File "", line 1, in
File
"/usr/local/lib/python3.7/site-packages/numba/typed/typedlist.py",
line 223, in append
_append(self, item) File "/usr/local/lib/python3.7/site-packages/numba/dispatcher.py", line
401, in _compile_for_args
error_rewrite(e, 'typing') File "/usr/local/lib/python3.7/site-packages/numba/dispatcher.py", line
344, in error_rewrite
reraise(type(e), e, None) File "/usr/local/lib/python3.7/site-packages/numba/six.py", line 668, in
reraise
raise value.with_traceback(tb) numba.errors.TypingError: Failed in nopython mode pipeline (step: nopython frontend) Internal error at
. Failed in
nopython mode pipeline (step: nopython mode backend) Cannot cast
ListType[tuple(float64 x 2)] to list(tuple(float64 x 2)): %".24" =
load {i8*, i8*}, {i8*, i8*}* %"item"
File
"../../usr/local/lib/python3.7/site-packages/numba/listobject.py",
line 434:
def impl(l, item):
casteditem = _cast(item, itemty)
the following should work
mylist2 = List.empty_list(item_type=types.ListType(itemty=types.Tuple((types.f8, types.f8))))
I was just trying SSL-Sockets in Micropython and discovered that I can not set the connection to non-blocking as the setblocking() function is not implemented, yet.
>>> import ussl
>>> import usocket
>>> s = usocket.socket()
>>> adr = usocket.getaddrinfo('myserverwithssl.com', 443)[0][-1]
>>> s.connect(adr)
>>> s_ssl = ussl.wrap_socket(adr)
>>> s_ssl.setblocking(False)
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
NotImplementedError:
Looking forward to the implementation. However, is there another way to achieve nonblocking SSL-Sockets in Micropython?