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in autoexec.bat in order to find the Tcl DLLs -- Tkinter calls FixTk which will hunt around in a few common places and then set PATH and try again, or else issue a big clarifying error message.
64 lines
2.2 KiB
Python
64 lines
2.2 KiB
Python
"""Utility which tries to locate the Tcl/Tk 8.0 DLLs on Windows.
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This is a no-op on other platforms.
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"""
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# Error messages we may spit out
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NO_TCL_MESSAGE = """\
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WHOOPS! I can't find a Tcl/Tk 8.0 installation anywhere.
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Please make sure that Tcl.Tk 8.0 is installed and that the PATH
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environment variable is set to include the Tcl/bin directory
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(or wherever TK80.DLL and TCL80.DLL are installed).
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If you don't know how to fix this, consider searching the Python FAQ
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for the error you get; post to the comp.lang.python if all else fails.
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Read the source file FixTk.py for details.
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"""
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NO_TKINTER_MESSAGE = """\
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WHOOPS! Even though I think I have found a Tcl/Tk 8.0 installation,
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I can't seem to import the _tkinter extension module.
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I get the following exception:
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ImportError: %s
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If you don't know how to fix this, consider searching the Python FAQ
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for the error you get; post to the comp.lang.python if all else fails.
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Read the source file FixTk.py for details.
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"""
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import sys
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if sys.platform == "win32":
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try:
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import _tkinter
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except ImportError:
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import os
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try:
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path = os.environ['PATH']
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except KeyError:
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path = ""
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python_exe = sys.executable
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python_dir = os.path.dirname(python_exe)
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program_files = os.path.dirname(python_dir)
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def tclcheck(dir):
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for dll in "tcl80.dll", "tk80.dll", "tclpip80.dll":
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if not os.path.isfile(os.path.join(dir, dll)):
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return 0
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return 1
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for tcldir in [program_files, "\\Program files", "\\",
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"C:\\Program Files", "D:\\Program Files"]:
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tcldir = os.path.join(tcldir, "Tcl", "bin")
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if tclcheck(tcldir):
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break
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else:
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tcldir = None
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if not tcldir:
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sys.stderr.write(NO_TCL_MESSAGE)
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else:
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if path and path[-1] != os.pathsep:
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path = path + os.pathsep
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path = path + tcldir
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os.environ["PATH"] = path
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os.putenv("PATH", path)
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try:
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import _tkinter
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except ImportError, message:
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sys.stderr.write(NO_TKINTER_MESSAGE % str(message))
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