Can someone help me with this error message. I am using MatPlotLib to graph something, but I get the following error message when I call the function to graph it. Tkinter Error Message
Use one of following commands are :: --
'UPLOAD' to upload a file
'DOWNLOAD' to download a file
'DELETE' to delete a file
'DIR' to view the current directories
DOWNLOAD
enter the name of the file to download!!!
break.txt
file opened
file close()
time: start = 0 end = 1587306325.2672875
time: transfer_time = 1587306325267.287
file downloaded and graph is shown below!!
Traceback (most recent call last):
File "file_client.py", line 117, in <module>
plot_graph(result)
File "file_client.py", line 81, in plot_graph
plt.scatter(list(time_dict.keys()), list(time_dict.values()))
File "/usr/lib/python3/dist-packages/matplotlib/pyplot.py", line 3364, in scatter
ax = gca()
File "/usr/lib/python3/dist-packages/matplotlib/pyplot.py", line 962, in gca
return gcf().gca(**kwargs)
File "/usr/lib/python3/dist-packages/matplotlib/pyplot.py", line 592, in gcf
return figure()
File "/usr/lib/python3/dist-packages/matplotlib/pyplot.py", line 539, in figure
**kwargs)
File "/usr/lib/python3/dist-packages/matplotlib/backend_bases.py", line 171, in new_figure_ manager
return cls.new_figure_manager_given_figure(num, fig)
File "/usr/lib/python3/dist-packages/matplotlib/backends/backend_tkagg.py", line 1049, in n ew_figure_manager_given_figure
window = Tk.Tk(className="matplotlib")
File "/usr/lib/python3.6/tkinter/__init__.py", line 2023, in __init__
self.tk = _tkinter.create(screenName, baseName, className, interactive, wantobjects, useT k, sync, use)
_tkinter.TclError: no display name and no $DISPLAY environment variable
Related
Here is the code I try to execute:
from graphviz import Graph
# Instantiate a new Graph object
dot = Graph('Data Science Process', format='png')
# Add nodes
dot.node('A', 'Get Data')
dot.node('B', 'Clean, Prepare, & Manipulate Data')
dot.node('C', 'Train Model')
dot.node('D', 'Test Data')
dot.node('E', 'Improve')
# Connect these nodes
dot.edges(['AB', 'BC', 'CD', 'DE'])
# Save chart
#dot.render('data_science_flowchart', view=True)
The render function won't work, and I have not idea what is wrong. If commented out, the code works, but of course produces nothing. My goal is to make a visualization of the graph (PNG image, or PDF file). Just trying to plot a rudimentary flowchart in Python, I am open to using other libraries than graphviz: I am new to this, and tried graphviz after reading recommendations, tested a dozen scripts posted online, but none of them work, always resulting in the same error.
Here is the error:
$ py graph2.py
py graph2.py
Traceback (most recent call last):
File "C:\Users\vince\AppData\Local\Programs\Python\Python310\lib\site-packages\graphviz\backend\execute.py", line 81, in run_check
proc = subprocess.run(cmd, **kwargs)
File "C:\Users\vince\AppData\Local\Programs\Python\Python310\lib\subprocess.py", line 501, in run
with Popen(*popenargs, **kwargs) as process:
File "C:\Users\vince\AppData\Local\Programs\Python\Python310\lib\subprocess.py", line 966, in __init__
self._execute_child(args, executable, preexec_fn, close_fds,
File "C:\Users\vince\AppData\Local\Programs\Python\Python310\lib\subprocess.py", line 1435, in _execute_child
hp, ht, pid, tid = _winapi.CreateProcess(executable, args,
FileNotFoundError: [WinError 2] The system cannot find the file specified
The above exception was the direct cause of the following exception:
Traceback (most recent call last):
File "C:\Users\vince\graph2.py", line 17, in <module>
dot.render('data_science_flowchart', view=True)
File "C:\Users\vince\AppData\Local\Programs\Python\Python310\lib\site-packages\graphviz\_tools.py", line 171, in wrapper
return func(*args, **kwargs)
File "C:\Users\vince\AppData\Local\Programs\Python\Python310\lib\site-packages\graphviz\rendering.py", line 122, in render
rendered = self._render(*args, **kwargs)
File "C:\Users\vince\AppData\Local\Programs\Python\Python310\lib\site-packages\graphviz\_tools.py", line 171, in wrapper
return func(*args, **kwargs)
File "C:\Users\vince\AppData\Local\Programs\Python\Python310\lib\site-packages\graphviz\backend\rendering.py", line 324, in render
execute.run_check(cmd,
File "C:\Users\vince\AppData\Local\Programs\Python\Python310\lib\site-packages\graphviz\backend\execute.py", line 84, in run_check
raise ExecutableNotFound(cmd) from e
graphviz.backend.execute.ExecutableNotFound: failed to execute WindowsPath('dot'), make sure the Graphviz executables are on your systems' PATH
While the epub is being generated successfully, but when I try to read the epub using readers like Calibre or Sigil. They throw errors like certain files are missing.
Here's my code to generate the epub file:
book = epub.EpubBook()
book.set_title(novelName)
book.set_language("en")
book.set_cover('temp.jpg', content=open('temp.jpg','rb').read())
book.set_identifier("test")
for i in authorNames:
book.add_author(i)
for i in range(1):
driver.get(chapterLinks[i])
try:
content=driver.find_element_by_id('chr-content').get_attribute("innerHTML")
time.sleep(5)
except Exception as e:
driver.close()
driver = webdriver.Chrome(ChromeDriverManager().install(),options=options)
driver.get(chapterLinks[i])
content=driver.find_element_by_id('chr-content').get_attribute("innerHTML")
time.sleep(5)
soup = BeautifulSoup(content)
ads=soup.find("div", class_="ads-holder")
if(ads!=None):
ads.decompose()
print(chapterNames[i], chapterLinks[i])
chapterName=chapterNames[i].replace("-","")
c=epub.EpubHtml(title=chapterName,
file_name='{}.xhtml'.format(chapterName),
lang='en')
c.set_content(str(soup).encode('utf-8'))
book.add_item(c)
chapterList.append(c)
book.toc = chapterList
book.spine = chapterList
book.add_item(epub.EpubNcx())
book.add_item(epub.EpubNav())
epub.write_epub('test.epub', book)
and here are the errors:
Calibre :
calibre, version 5.20.0
ERROR: Loading book failed: Failed to open the book at C:\Users\xxxxx\Documents\Visual Studio 2019\PersonalProjects\Novel Grabber\test.epub. Click "Show details" for more info.
Failed to convert book: C:\Users\xxxxx\Documents\Visual Studio 2019\PersonalProjects\Novel Grabber\test.epub with error:
InputFormatPlugin: EPUB Input running
on C:\Users\xxxxx\Documents\Visual Studio 2019\PersonalProjects\Novel Grabber\test.epub
Failed to run pipe worker with command: from calibre.srv.render_book import viewer_main; viewer_main()
Traceback (most recent call last):
File "runpy.py", line 194, in _run_module_as_main
File "runpy.py", line 87, in _run_code
File "site.py", line 82, in <module>
File "site.py", line 77, in main
File "site.py", line 49, in run_entry_point
File "calibre\utils\ipc\worker.py", line 197, in main
File "<string>", line 1, in <module>
File "calibre\srv\render_book.py", line 824, in viewer_main
File "calibre\srv\render_book.py", line 815, in render_for_viewer
File "calibre\srv\render_book.py", line 793, in render
File "calibre\srv\render_book.py", line 601, in process_exploded_book
File "calibre\srv\render_book.py", line 604, in <setcomp>
File "calibre\ebooks\oeb\polish\container.py", line 561, in has_name_and_is_not_empty
File "genericpath.py", line 50, in getsize
FileNotFoundError: [WinError 2] The system cannot find the file specified: 'C:\\Users\\xxxxxx\\AppData\\Local\\calibre-cache\\ev2\\t\\c0-vdo66nim\\EPUB\\Chapter 2 '
Sigil:
Files exist in epub that are not listed in manifest, they will be ignored
Does anybody know what could be the cause for this?
I'm on chapter 11 of the official guide to the open62541 library. The html version is here. Before trying anything custom, I just want to try this feature in the most basic way by "compiling" their example xml file into C code, which can then be compiled with the GCC and run as an OPC server. (If you would like to follow along, download the full source code from the main page—the nodeset compiler tool is in there.)
I'm in a Debian-based environment (CLI only). I made a copy of myNS.xml and saved it directly in the path ~/code/open62541-open62541-6249bb2/tools/nodeset_compiler/, which is also my current working directory in this example. I tried to use the nodeset compiler with exactly the same command that they use in the tutorial: python ./nodeset_compiler.py --types-array=UA_TYPES --existing ../../deps/ua-nodeset/Schema/Opc.Ua.NodeSet2.xml --xml myNS.xml myNS
The error message I got is this:
Traceback (most recent call last):
File "./nodeset_compiler.py", line 126, in <module>
ns.addNodeSet(xmlfile, True, typesArray=getTypesArray(nsCount))
File "/root/code/open62541-open62541-6249bb2/tools/nodeset_compiler/nodeset.py", line 224, in addNodeSet
nodesets = dom.parseString(fileContent).getElementsByTagName("UANodeSet")
File "/usr/lib/python2.7/xml/dom/minidom.py", line 1928, in parseString
return expatbuilder.parseString(string)
File "/usr/lib/python2.7/xml/dom/expatbuilder.py", line 940, in parseString
return builder.parseString(string)
File "/usr/lib/python2.7/xml/dom/expatbuilder.py", line 223, in parseString
parser.Parse(string, True)
xml.parsers.expat.ExpatError: syntax error: line 1, column 0
Any idea what I might be doing wrong?
UPDATE:
Alright, I found out there was a problem with my Opc.Ua.NodeSet2.xml file, which I corrected. If you are following along and would like to grab the version of the file I have, you can get it here.
But now I have this issue:
INFO:__main__:Preprocessing (existing) ../../deps/ua-nodeset/Schema/Opc.Ua.NodeSet2.xml
INFO:__main__:Preprocessing myNS.xml
Traceback (most recent call last):
File "./nodeset_compiler.py", line 178, in <module>
ns.allocateVariables()
File "/root/code/open62541-open62541-6249bb2/tools/nodeset_compiler/nodeset.py", line 322, in allocateVariables
n.allocateValue(self)
File "/root/code/open62541-open62541-6249bb2/tools/nodeset_compiler/nodes.py", line 291, in allocateValue
self.value.parseXMLEncoding(self.xmlValueDef, dataTypeNode, self)
File "/root/code/open62541-open62541-6249bb2/tools/nodeset_compiler/datatypes.py", line 161, in parseXMLEncoding
val = self.__parseXMLSingleValue(el, parentDataTypeNode, parent)
File "/root/code/open62541-open62541-6249bb2/tools/nodeset_compiler/datatypes.py", line 281, in __parseXMLSingleValue
extobj.value.append(extobj.__parseXMLSingleValue(ebodypart, parentDataTypeNode, parent, alias=None, encodingPart=e))
File "/root/code/open62541-open62541-6249bb2/tools/nodeset_compiler/datatypes.py", line 223, in __parseXMLSingleValue
alias=alias, encodingPart=enc[1], valueRank=enc[2] if len(enc)>2 else None)
File "/root/code/open62541-open62541-6249bb2/tools/nodeset_compiler/datatypes.py", line 198, in __parseXMLSingleValue
t.parseXML(xmlvalue)
File "/root/code/open62541-open62541-6249bb2/tools/nodeset_compiler/datatypes.py", line 330, in parseXML
self.value = int(unicode(xmlvalue.firstChild.data))
ValueError: invalid literal for int() with base 10: ''
UPDATE_2:
I tried doing the same thing on my Windows laptop, and here is the error I got:
INFO:__main__:Preprocessing (existing) ../../deps/ua-nodeset/Schema/Opc.Ua.NodeSet2.xml
INFO:__main__:Preprocessing myNS.xml
Traceback (most recent call last):
File "./nodeset_compiler.py", line 178, in <module>
ns.allocateVariables()
File "C:\Users\ekstraaa\Source\open62541\open62541-open62541-6249bb2\tools\nodeset_compiler\nodeset.py", line 322, in allocateVariables
n.allocateValue(self)
File "C:\Users\ekstraaa\Source\open62541\open62541-open62541-6249bb2\tools\nodeset_compiler\nodes.py", line 291, in allocateValue
self.value.parseXMLEncoding(self.xmlValueDef, dataTypeNode, self)
File "C:\Users\ekstraaa\Source\open62541\open62541-open62541-6249bb2\tools\nodeset_compiler\datatypes.py", line 161, in parseXMLEncoding
val = self.__parseXMLSingleValue(el, parentDataTypeNode, parent)
File "C:\Users\ekstraaa\Source\open62541\open62541-open62541-6249bb2\tools\nodeset_compiler\datatypes.py", line 281, in __parseXMLSingleValue
extobj.value.append(extobj.__parseXMLSingleValue(ebodypart, parentDataTypeNode, parent, alias=None, encodingPart=e))
File "C:\Users\ekstraaa\Source\open62541\open62541-open62541-6249bb2\tools\nodeset_compiler\datatypes.py", line 223, in __parseXMLSingleValue
alias=alias, encodingPart=enc[1], valueRank=enc[2] if len(enc)>2 else None)
File "C:\Users\ekstraaa\Source\open62541\open62541-open62541-6249bb2\tools\nodeset_compiler\datatypes.py", line 198, in __parseXMLSingleValue
t.parseXML(xmlvalue)
File "C:\Users\ekstraaa\Source\open62541\open62541-open62541-6249bb2\tools\nodeset_compiler\datatypes.py", line 330, in parseXML
self.value = int(unicode(xmlvalue.firstChild.data))
ValueError: invalid literal for int() with base 10: '\n '
The complete documentation for the open62541 nodeset compiler can be found here:
https://open62541.org/doc/current/nodeset_compiler.html
The command you are using also seems to be fine.
The last issue you are describing invalid literal for int() is due to a newline inside the value tag of a variable.
This will be fixed with
https://github.com/open62541/open62541/pull/2768
For a workaround you can change your .xml from
<Value>
<Int32>
</Int32>
</Value>
to (no newline):
<Value>
<Int32></Int32>
</Value>
I am struggling to setup pymunk on my Ubuntu 16.04. I am using virtualenv, I have Python 3.5.2, pymunk 5.3.0 and cffi 1.11.0 installed.
I tried a very simple code first; basically, I created an empty Space and called step on it and everything worked smoothly. However, when I try to visualize it and create DrawOptions instance, I get strange errors, which I can't decipher. Also, I tried matplotlib_util and pygame_util, but both failed to create DrawOptions.
This is the code snippet I used:
import pymunk
import pyglet
import pymunk.pyglet_util
s = pymunk.Space()
options = pymunk.pyglet_util.DrawOptions()
s.debug_draw(options)
# s.step(0.02)
This is the output I get:
Loading chipmunk for Linux (64bit) [/home/wm/.virtualenvs/cv/lib/python3.5/site-packages/pymunk/libchipmunk.so]
Traceback (most recent call last):
File "/home/wm/.virtualenvs/cv/lib/python3.5/site-packages/cffi-1.11.0-py3.5-linux-x86_64.egg/cffi/api.py", line 167, in _typeof
result = self._parsed_types[cdecl]
KeyError: 'typedef void (*cpSpaceDebugDrawCircleImpl)(cpVect pos, cpFloat angle, cpFloat radius, cpSpaceDebugColor outlineColor, cpSpaceDebugColor fillColor, cpDataPointer data)'
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "/home/wm/.virtualenvs/cv/lib/python3.5/site-packages/cffi-1.11.0-py3.5-linux-x86_64.egg/cffi/cparser.py", line 276, in _parse
ast = _get_parser().parse(fullcsource)
File "/home/wm/.virtualenvs/cv/lib/python3.5/site-packages/pycparser/c_parser.py", line 152, in parse
debug=debuglevel)
File "/home/wm/.virtualenvs/cv/lib/python3.5/site-packages/pycparser/ply/yacc.py", line 331, in parse
return self.parseopt_notrack(input, lexer, debug, tracking, tokenfunc)
File "/home/wm/.virtualenvs/cv/lib/python3.5/site-packages/pycparser/ply/yacc.py", line 1199, in parseopt_notrack
tok = call_errorfunc(self.errorfunc, errtoken, self)
File "/home/wm/.virtualenvs/cv/lib/python3.5/site-packages/pycparser/ply/yacc.py", line 193, in call_errorfunc
r = errorfunc(token)
File "/home/wm/.virtualenvs/cv/lib/python3.5/site-packages/pycparser/c_parser.py", line 1761, in p_error
column=self.clex.find_tok_column(p)))
File "/home/wm/.virtualenvs/cv/lib/python3.5/site-packages/pycparser/plyparser.py", line 66, in _parse_error
raise ParseError("%s: %s" % (coord, msg))
pycparser.plyparser.ParseError: <cdef source string>:2:16: before: cpSpaceDebugDrawCircleImpl
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "pmtest2.py", line 5, in <module>
options = pymunk.pyglet_util.DrawOptions()
File "/home/wm/.virtualenvs/cv/lib/python3.5/site-packages/pymunk/pyglet_util.py", line 89, in __init__
super(DrawOptions, self).__init__()
File "/home/wm/.virtualenvs/cv/lib/python3.5/site-packages/pymunk/space_debug_draw_options.py", line 51, in __init__
#ffi.callback("typedef void (*cpSpaceDebugDrawCircleImpl)"
File "/home/wm/.virtualenvs/cv/lib/python3.5/site-packages/cffi-1.11.0-py3.5-linux-x86_64.egg/cffi/api.py", line 375, in callback
cdecl = self._typeof(cdecl, consider_function_as_funcptr=True)
File "/home/wm/.virtualenvs/cv/lib/python3.5/site-packages/cffi-1.11.0-py3.5-linux-x86_64.egg/cffi/api.py", line 170, in _typeof
result = self._typeof_locked(cdecl)
File "/home/wm/.virtualenvs/cv/lib/python3.5/site-packages/cffi-1.11.0-py3.5-linux-x86_64.egg/cffi/api.py", line 155, in _typeof_locked
type = self._parser.parse_type(cdecl)
File "/home/wm/.virtualenvs/cv/lib/python3.5/site-packages/cffi-1.11.0-py3.5-linux-x86_64.egg/cffi/cparser.py", line 476, in parse_type
return self.parse_type_and_quals(cdecl)[0]
File "/home/wm/.virtualenvs/cv/lib/python3.5/site-packages/cffi-1.11.0-py3.5-linux-x86_64.egg/cffi/cparser.py", line 479, in parse_type_and_quals
ast, macros = self._parse('void __dummy(\n%s\n);' % cdecl)[:2]
File "/home/wm/.virtualenvs/cv/lib/python3.5/site-packages/cffi-1.11.0-py3.5-linux-x86_64.egg/cffi/cparser.py", line 278, in _parse
self.convert_pycparser_error(e, csource)
File "/home/wm/.virtualenvs/cv/lib/python3.5/site-packages/cffi-1.11.0-py3.5-linux-x86_64.egg/cffi/cparser.py", line 307, in convert_pycparser_error
raise CDefError(msg)
cffi.error.CDefError: cannot parse "typedef void (*cpSpaceDebugDrawCircleImpl)(cpVect pos, cpFloat angle, cpFloat radius, cpSpaceDebugColor outlineColor, cpSpaceDebugColor fillColor, cpDataPointer data)"
<cdef source string>:2:16: before: cpSpaceDebugDrawCircleImpl
What do you think is causing that? Is that the python version I use, or maybe cffi compilation is faulty?
This error happens because there was a new version of pycparser (which is used by cffi) released, and that version breaks pymunk 5.3.0 and earlier versions. Yesterday I made a new release of Pymunk, 5.3.1 with a workaround for the problem. If you try to update your Pymunk version to 5.3.1 it should work.
I'm having difficulty building my app using py2app. I can build it in alias mode without issue using this command:
python3.4 setup.py py2app -A
However when I try and build it using:
python3.4 setup.py py2app
I get the error message as per title of this post. From the research I've done I believe it's an issue with Pillow; however I need Pillow for this app. (Unless there's another module I can use to import images??). I've also tried cx_freeze without success.
Any help or direction much appreciated.
Full traceback as follows:
Traceback (most recent call last):
File "setup.py", line 19, in <module>
setup_requires=['py2app'],
File "/Library/Frameworks/Python.framework/Versions/3.4/lib/python3.4/
distutils/core.py", line 148, in setup dist.run_commands()
File "/Library/Frameworks/Python.framework/Versions/3.4/lib/python3.4/
distutils/dist.py", line 955, in run_commands self.run_command(cmd)
File"/Library/Frameworks/Python.framework/Versions/3.4/lib/python3.4/
distutils/dist.py", line 974, in run_command cmd_obj.run()
File "/Library/Frameworks/Python.framework/Versions/3.4/lib/python3.4/
site- packages/py2app/build_app.py", line 659, in run self._run()
File "/Library/Frameworks/Python.framework/Versions/3.4/lib/python3.4/
site- packages/py2app/build_app.py", line 865, in _run self.run_normal()
File "/Library/Frameworks/Python.framework/Versions/3.4/lib/python3.4/
site- packages/py2app/build_app.py", line 959, in
run_normal self.create_binaries(py_files, pkgdirs, extensions,loader_files)
File "/Library/Frameworks/Python.framework/Versions/3.4/lib/python3.4/
site- packages/py2app/build_app.py", line 1214, in create_binaries
platfiles = mm.run()
File "/Library/Frameworks/Python.framework/Versions/3.4/lib/python3.4/
site-packages/macholib/MachOStandalone.py", line 105, in run
mm.run_file(fn)
File "/Library/Frameworks/Python.framework/Versions/3.4/lib/python3.4/
site-packages/macholib/MachOGraph.py", line 84, in run_file
self.scan_node(m)
File "/Library/Frameworks/Python.framework/Versions/3.4/lib/python3.4/
site-packages/macholib/MachOGraph.py", line 110, in scan_node
m = self.load_file(filename, caller=node)
File "/Library/Frameworks/Python.framework/Versions/3.4/lib/python3.4/
site-packages/macholib/MachOGraph.py", line 93, in load_file
newname = self.locate(name, loader=caller)
File "/Library/Frameworks/Python.framework/Versions/3.4/lib/python3.4/
site-packages/macholib/MachOStandalone.py", line 23, in locate
newname = super(FilteredMachOGraph, self).locate(filename, loader)
File "/Library/Frameworks/Python.framework/Versions/3.4/lib/python3.4/
site-packages/macholib/MachOGraph.py", line 49, in locate
loader=loader.filename)
TypeError: dyld_find() got an unexpected keyword argument 'loader'
This is a temporary solution, and it may break other things. I would recommend doing this is a virtual environment so you don't mess up your regular packages. This worked for me (virtenv is the name of my virtual environment)
Open the file /virtenv/lib/python3.4/site-packages/macholib/dyld.py and replace each instance of loader_path with loader. Now save and try again.
You can monkey-patch macholib rather than modifying it in site-packages. Place the following file to the directory containing setup_py2app.py and add import macholib_patch to the top.
macholib_patch.py:
"""
Monkey-patch macholib to fix "dyld_find() got an unexpected keyword argument 'loader'".
Add 'import macholib_patch' to the top of set_py2app.py
"""
import macholib
#print("~"*60 + "macholib verion: "+macholib.__version__)
if macholib.__version__ <= "1.7":
print("Applying macholib patch...")
import macholib.dyld
import macholib.MachOGraph
dyld_find_1_7 = macholib.dyld.dyld_find
def dyld_find(name, loader=None, **kwargs):
#print("~"*60 + "calling alternate dyld_find")
if loader is not None:
kwargs['loader_path'] = loader
return dyld_find_1_7(name, **kwargs)
macholib.MachOGraph.dyld_find = dyld_find