@ninfinity : can you give me instructions on how to install your version. I am trying but I am getting error.

[emvalbuena]

@ninfinity : can you give me instructions on how to install your version. I am trying but I am getting error.

home/chaitu1351/anaconda3/lib/python3.7/distutils/dist.py:274: UserWarning: Unknown distribution option: 'zip_save'
      warnings.warn(msg)
    error: can't copy 'build/lib.linux-x86_64-3.7/xfoil/xfoil.cpython-37m-x86_64-linux-gnu.so': doesn't exist or not a regular file
    ['-DCMAKE_BUILD_TYPE=Release', '-DCMAKE_LIBRARY_OUTPUT_DIRECTORY_RELEASE=/home/chaitu1351/src/xfoil/build/lib.linux-x86_64-3.7/xfoil', '-DCMAKE_ARCHIVE_OUTPUT_DIRECTORY_RELEASE=build/temp.linux-x86_64-3.7', '-DPYTHON_EXECUTABLE=/home/chaitu1351/anaconda3/bin/python']

Originally posted by @ckesanapalli in daniel-de-vries#2 (comment)

[emvalbuena]

If you look in the compilation folders, you will see that the library has actually been compiled correctly.

[felaube]

I got the same error, but here the library hasn't been compiled.

[emvalbuena]

@Fer123a Could you please copy-paste the error output?

[felaube]

Running setup.py install for xfoil ... error
ERROR: Command errored out with exit status 1:
 command: 'c:\users\ferna\appdata\local\programs\python\python37-32\python.exe' -u -c 'import sys, setuptools, tokenize; sys.argv[0] = '"'"'C:\\Users\\ferna\\AppData\\Local\\Temp\\pip-install-zdrb36aa\\xfoil\\setup.py'"'"'; __file__='"'"'C:\\Users\\ferna\\AppData\\Local\\Temp\\pip-install-zdrb36aa\\xfoil\\setup.py'"'"';f=getattr(tokenize, '"'"'open'"'"', open)(__file__);code=f.read().replace('"'"'\r\n'"'"', '"'"'\n'"'"');f.close();exec(compile(code, __file__, '"'"'exec'"'"'))' install --record 'C:\Users\ferna\AppData\Local\Temp\pip-record-vicsta8t\install-record.txt' --single-version-externally-managed --compile
     cwd: C:\Users\ferna\AppData\Local\Temp\pip-install-zdrb36aa\xfoil\
Complete output (61 lines):
c:\users\ferna\appdata\local\programs\python\python37-32\lib\distutils\dist.py:274: UserWarning: Unknown distribution option: 'zip_save'    
  warnings.warn(msg)
running install
running build
running build_py
creating build
creating build\lib.win32-3.7
creating build\lib.win32-3.7\xfoil
copying xfoil\model.py -> build\lib.win32-3.7\xfoil
copying xfoil\test.py -> build\lib.win32-3.7\xfoil
copying xfoil\xfoil.py -> build\lib.win32-3.7\xfoil
copying xfoil\__init__.py -> build\lib.win32-3.7\xfoil
running build_ext
Traceback (most recent call last):
  File "C:\Users\ferna\AppData\Local\Temp\pip-install-zdrb36aa\xfoil\setup.py", line 55, in build_extensions
    out = subprocess.check_output(['cmake', '--version'])
  File "c:\users\ferna\appdata\local\programs\python\python37-32\lib\subprocess.py", line 395, in check_output
    **kwargs).stdout
  File "c:\users\ferna\appdata\local\programs\python\python37-32\lib\subprocess.py", line 472, in run
    with Popen(*popenargs, **kwargs) as process:
  File "c:\users\ferna\appdata\local\programs\python\python37-32\lib\subprocess.py", line 775, in __init__
    restore_signals, start_new_session)
  File "c:\users\ferna\appdata\local\programs\python\python37-32\lib\subprocess.py", line 1178, in _execute_child
    startupinfo)
FileNotFoundError: [WinError 2] O sistema não pode encontrar o arquivo especificado

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "<string>", line 1, in <module>
  File "C:\Users\ferna\AppData\Local\Temp\pip-install-zdrb36aa\xfoil\setup.py", line 145, in <module>
    zip_save=False
  File "c:\users\ferna\appdata\local\programs\python\python37-32\lib\site-packages\setuptools\__init__.py", line 145, in setup
    return distutils.core.setup(**attrs)
  File "c:\users\ferna\appdata\local\programs\python\python37-32\lib\distutils\core.py", line 148, in setup
    dist.run_commands()
  File "c:\users\ferna\appdata\local\programs\python\python37-32\lib\distutils\dist.py", line 966, in run_commands
    self.run_command(cmd)
  File "c:\users\ferna\appdata\local\programs\python\python37-32\lib\distutils\dist.py", line 985, in run_command
    cmd_obj.run()
  File "c:\users\ferna\appdata\local\programs\python\python37-32\lib\site-packages\setuptools\command\install.py", line 61, in run
    return orig.install.run(self)
  File "c:\users\ferna\appdata\local\programs\python\python37-32\lib\distutils\command\install.py", line 545, in run
    self.run_command('build')
  File "c:\users\ferna\appdata\local\programs\python\python37-32\lib\distutils\cmd.py", line 313, in run_command
    self.distribution.run_command(command)
  File "c:\users\ferna\appdata\local\programs\python\python37-32\lib\distutils\dist.py", line 985, in run_command
    cmd_obj.run()
  File "c:\users\ferna\appdata\local\programs\python\python37-32\lib\distutils\command\build.py", line 135, in run
    self.run_command(cmd_name)
  File "c:\users\ferna\appdata\local\programs\python\python37-32\lib\distutils\cmd.py", line 313, in run_command
    self.distribution.run_command(command)
  File "c:\users\ferna\appdata\local\programs\python\python37-32\lib\distutils\dist.py", line 985, in run_command
    cmd_obj.run()
  File "c:\users\ferna\appdata\local\programs\python\python37-32\lib\site-packages\setuptools\command\build_ext.py", line 78, in run        
    _build_ext.run(self)
  File "c:\users\ferna\appdata\local\programs\python\python37-32\lib\distutils\command\build_ext.py", line 340, in run
    self.build_extensions()
  File "C:\Users\ferna\AppData\Local\Temp\pip-install-zdrb36aa\xfoil\setup.py", line 57, in build_extensions
    raise RuntimeError('Cannot find CMake executable')
RuntimeError: Cannot find CMake executable
----------------------------------------
ERROR: Command errored out with exit status 1: 'c:\users\ferna\appdata\local\programs\python\python37-32\python.exe' -u -c 'import sys, setuptools, tokenize; sys.argv[0] = '"'"'C:\\Users\\ferna\\AppData\\Local\\Temp\\pip-install-zdrb36aa\\xfoil\\setup.py'"'"'; __file__='"'"'C:\\Users\\ferna\\AppData\\Local\\Temp\\pip-install-zdrb36aa\\xfoil\\setup.py'"'"';f=getattr(tokenize, '"'"'open'"'"', open)(__file__);code=f.read().replace('"'"'\r\n'"'"', '"'"'\n'"'"');f.close();exec(compile(code, __file__, '"'"'exec'"'"'))' install --record 'C:\Users\ferna\AppData\Local\Temp\pip-record-vicsta8t\install-record.txt' --single-version-externally-managed --compile Check the logs for full command output.

[emvalbuena]

Have you checked if you have CMake installed?

If you have a closer look, it is not the same error as the one reported above.

[felaube]

Yeah, you're right, it's a different error. I have cmake installed, and I also have MinGW C and FORTRAN compilers installed and MinGW\bin directory added to the Path environment variable.

[felaube]

I found out what was wrong, I was just using a 32 bits Python Interpreter instead of a 64 bits one.
Now, I was able to install the package, but I came across another error:

>>> from xfoil import XFoil
>>> xf = XFoil()
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "C:\Users\ferna\AppData\Local\Programs\Python\Python37\lib\site-packages\xfoil\xfoil.py", line 56, in __init__
    self._lib = cdll.LoadLibrary(self._lib_path)
File "C:\Users\ferna\AppData\Local\Programs\Python\Python37\lib\ctypes\__init__.py", line 442, in LoadLibrary
    return self._dlltype(name)
File "C:\Users\ferna\AppData\Local\Programs\Python\Python37\lib\ctypes\__init__.py", line 364, in __init__
    self._handle = _dlopen(self._name, mode)
OSError: [WinError 193] %1 não é um aplicativo Win32 válido
>>> quit()
Exception ignored in: <function XFoil.__del__ at 0x0000021FF7D79AF8>
Traceback (most recent call last):
File "C:\Users\ferna\AppData\Local\Programs\Python\Python37\lib\site-packages\xfoil\xfoil.py", line 66, in __del__
    handle = self._lib._handle
AttributeError: 'XFoil' object has no attribute '_lib'

The line "OSError: [WinError 193] %1 não é um aplicativo Win32 válido" says [WinError 193] %1 is not a valid Win32 application

[emvalbuena]

Mmm, the truth is that since I am running on a MacOs system it is more difficult to test your problem.

Could you send snapshot of the folders and the builds created by the installation process?

[felaube]

[gmonechi]

I found out what was wrong, I was just using a 32 bits Python Interpreter instead of a 64 bits one.
Now, I was able to install the package, but I came across another error:

>>> from xfoil import XFoil
>>> xf = XFoil()
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "C:\Users\ferna\AppData\Local\Programs\Python\Python37\lib\site-packages\xfoil\xfoil.py", line 56, in __init__
    self._lib = cdll.LoadLibrary(self._lib_path)
File "C:\Users\ferna\AppData\Local\Programs\Python\Python37\lib\ctypes\__init__.py", line 442, in LoadLibrary
    return self._dlltype(name)
File "C:\Users\ferna\AppData\Local\Programs\Python\Python37\lib\ctypes\__init__.py", line 364, in __init__
    self._handle = _dlopen(self._name, mode)
OSError: [WinError 193] %1 não é um aplicativo Win32 válido
>>> quit()
Exception ignored in: <function XFoil.__del__ at 0x0000021FF7D79AF8>
Traceback (most recent call last):
File "C:\Users\ferna\AppData\Local\Programs\Python\Python37\lib\site-packages\xfoil\xfoil.py", line 66, in __del__
    handle = self._lib._handle
AttributeError: 'XFoil' object has no attribute '_lib'

The line "OSError: [WinError 193] %1 não é um aplicativo Win32 válido" says [WinError 193] %1 is not a valid Win32 application

I am currently having the same issue as this, is there any solution? The installation was successful and the folder structure is the same to what @Fer123a has.

[felaube]

I found out what was wrong, I was just using a 32 bits Python Interpreter instead of a 64 bits one.
Now, I was able to install the package, but I came across another error:

>>> from xfoil import XFoil
>>> xf = XFoil()
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "C:\Users\ferna\AppData\Local\Programs\Python\Python37\lib\site-packages\xfoil\xfoil.py", line 56, in __init__
    self._lib = cdll.LoadLibrary(self._lib_path)
File "C:\Users\ferna\AppData\Local\Programs\Python\Python37\lib\ctypes\__init__.py", line 442, in LoadLibrary
    return self._dlltype(name)
File "C:\Users\ferna\AppData\Local\Programs\Python\Python37\lib\ctypes\__init__.py", line 364, in __init__
    self._handle = _dlopen(self._name, mode)
OSError: [WinError 193] %1 não é um aplicativo Win32 válido
>>> quit()
Exception ignored in: <function XFoil.__del__ at 0x0000021FF7D79AF8>
Traceback (most recent call last):
File "C:\Users\ferna\AppData\Local\Programs\Python\Python37\lib\site-packages\xfoil\xfoil.py", line 66, in __del__
    handle = self._lib._handle
AttributeError: 'XFoil' object has no attribute '_lib'

The line "OSError: [WinError 193] %1 não é um aplicativo Win32 válido" says [WinError 193] %1 is not a valid Win32 application

I am currently having the same issue as this, is there any solution? The installation was successful and the folder structure is the same to what @Fer123a has.

Ultimately I was not able to use this package. I ended up using the method described in the first videos of the following YouTube playlist https://www.youtube.com/playlist?list=PLxT-itJ3HGuUDVMuWKBxyoY8Dm9O9qstP. In the videos, the guy uses MATLAB, but in the descriptions you can find links to the python scripts that does the same as the MATLAB ones. I don't know what you're trying to do, but maybe that works for you too.

[gmonechi]

Thank you, I will look into it

[joshuaxdmb]

I am getting the same issue:

AttributeError: 'XFoil' object has no attribute '_lib'

Although, I did make it work a long time ago on my old computer. I don't remember doing anything in particular. It just started to work after I was using Aerosandbox for a long time.

Does anyone have a solution? I already tried reinstalling OpenSSL in all ways possible as suggested in other threads.

Many thanks!

[hntter]

I have the same issues with @Fer123a @joshuaxdmb @gmonechi

Traceback (most recent call last):
File "E:/Projects/Propeller_design/ceshi.py", line 6, in
xf = XFoil()
File "D:\Engineering Software\Python3.8\lib\site-packages\xfoil\xfoil.py", line 57, in init
self._lib = cdll.LoadLibrary(self.lib_path)
File "D:\Engineering Software\Python3.8\lib\ctypes_init.py", line 451, in LoadLibrary
return self.dlltype(name)
File "D:\Engineering Software\Python3.8\lib\ctypes_init.py", line 373, in init
self._handle = _dlopen(self._name, mode)
FileNotFoundError: Could not find module 'C:\Users\ZQu\AppData\Local\Temp\tmpmqwr1zy7.dll' (or one of its dependencies). Try using the full path with constructor syntax.
Exception ignored in: <function XFoil.del at 0x03DFEB20>
Traceback (most recent call last):
File "D:\Engineering Software\Python3.8\lib\site-packages\xfoil\xfoil.py", line 67, in del
handle = self._lib._handle
AttributeError: 'XFoil' object has no attribute '_lib'

Has anybody fixed this issues? It really bother me for 2 weeks

[joshuaxdmb]

@hntter Try using python 3.7 instead of 3.8.

[matthiasmfr]

@hntter Try using python 3.7 instead of 3.8.

This did not make a difference for me. Neither on windows nor Mac