Comment #33 on issue 1235 by daniel.g...@gmail.com: Problem installing in
Windows
http://code.google.com/p/sympy/issues/detail?id=1235
Now i will describe what is the problem and how to solve it:
If we install "python-2.7.2.amd64.msi" or the newer version of python when
we try
to install "SymPy" we get an error message: "No Python information found in
the registry".
That's because "python-2.7.2.amd64.msi" installer put his regystry file in:
[HKEY_LOCAL_MACHINE\SOFTWARE\Python\PythonCore\2.6\InstallPath],
but when we build with "dbilt" and start the builded file(if it's 32-bit),
it search in:
[HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Python\PythonCore\2.6\InstallPath]
and
[HKEY_CURRENT_USER\Software\Python\PythonCore]
You can see the difference and that's why SymPy didn't find Python in
Regystry
There a few ways to deal with the problem:
1.Install SymPy from source with:
python setup.py install
2.To have "sympy-0.7.1.win-amd64.exe" installer(i have made one).It can be
made by
cross-compiling, but ONLY UNDER WINDOWS!
3.Use my script and install with "sympy-0.7.1.win32.exe" from:
http://code.google.com/p/sympy/downloads/list
What do my script is simply copy information of:
[HKEY_LOCAL_MACHINE\SOFTWARE\Python\PythonCore\2.6\InstallPath]
in [HKEY_CURRENT_USER\Software\Python\PythonCore]
so the "sympy-0.7.1.win32.exe" binary will found it in regystry.It can also
be made to copy
to
[HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Python\PythonCore\2.6\InstallPath]
but i must start the script with Administrator privileges in Windows...
so here's the script:
import sys
from _winreg import *
version = sys.version[:3]
installpath = sys.prefix
regpath = "SOFTWARE\\Python\\Pythoncore\\%s\\" % (version)
installkey = "InstallPath"
pythonkey = "PythonPath"
pythonpath = "%s;%s\\Lib\\;%s\\DLLs\\" % (
installpath, installpath, installpath
)
def RegisterPy():
try:
reg = OpenKey(HKEY_CURRENT_USER, regpath)
except EnvironmentError:
try:
reg = CreateKey(HKEY_CURRENT_USER, regpath)
SetValue(reg, installkey, REG_SZ, installpath)
SetValue(reg, pythonkey, REG_SZ, pythonpath)
CloseKey(reg)
except:
print "*** Unable to register!"
return
print "--- Python", version, "is now registered!"
return
if (QueryValue(reg, installkey) == installpath and
QueryValue(reg, pythonkey) == pythonpath):
CloseKey(reg)
print "=== Python", version, "is already registered!"
return
CloseKey(reg)
print "*** Unable to register!"
print "*** You probably have another Python installation!"
if __name__ == "__main__":
RegisterPy()
Attachments:
sympy-0.7.1.win-amd64.exe 1.9 MB
regystry.py 1.1 KB
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