在 Tkinter.Tcl() 中使用 Python 函数
我有很多 Python 函数。我们将它们称为
foo
、bar
和baz
。它们接受可变数量的字符串参数并执行其他复杂的操作(例如访问网络)。我希望“用户”(假设他只熟悉 Tcl)使用这些函数在 Tcl 中编写脚本。
这是一个用户可以来的示例(取自 Macports)补充:
post-configure {
if {[variant_isset universal]} {
set conflags ""
foreach arch ${configure.universal_archs} {
if {${arch} == "i386"} {append conflags "x86 "} else {
if {${arch} == "ppc64"} {append conflags "ppc_64 "} else {
append conflags ${arch} " "
}
}
}
set profiles [exec find ${worksrcpath} -name "*.pro"]
foreach profile ${profiles} {
reinplace -E "s|^(CONFIG\[ \\t].*)|\\1 ${conflags}|" ${profile}
# Cures an isolated case
system "cd ${worksrcpath}/designer && \
${qt_dir}/bin/qmake -spec ${qt_dir}/mkspecs/macx-g++ -macx \
-o Makefile python.pro"
}
}
}
这里,variant_issset
、reinplace
等(Tcl 内置函数除外)被实现为 Python 函数。 if
、foreach
、set
等是普通的 Tcl 结构。 post-configure 是一个 Python 函数,它接受稍后可以执行的 Tcl 代码块(这显然最终会调用上述 Python“函数”)。
这可以用 Python 实现吗?如果是这样,怎么办?
从 Tkinter 导入 *;根= Tk(); root.tk.eval('puts [array get tcl_platform]')
是我所知道的唯一集成,这显然非常有限(更不用说它在 mac 上启动 X11 服务器了)。
I have a bunch of Python functions. Let's call them
foo
,bar
andbaz
. They accept variable number of string arguments and does other sophisticated things (like accessing the network).I want the "user" (let's assume he is only familiar with Tcl) to write scripts in Tcl using those functions.
Here's an example (taken from Macports) that user can come up with:
post-configure {
if {[variant_isset universal]} {
set conflags ""
foreach arch ${configure.universal_archs} {
if {${arch} == "i386"} {append conflags "x86 "} else {
if {${arch} == "ppc64"} {append conflags "ppc_64 "} else {
append conflags ${arch} " "
}
}
}
set profiles [exec find ${worksrcpath} -name "*.pro"]
foreach profile ${profiles} {
reinplace -E "s|^(CONFIG\[ \\t].*)|\\1 ${conflags}|" ${profile}
# Cures an isolated case
system "cd ${worksrcpath}/designer && \
${qt_dir}/bin/qmake -spec ${qt_dir}/mkspecs/macx-g++ -macx \
-o Makefile python.pro"
}
}
}
Here, variant_issset
, reinplace
are so on (other than Tcl builtins) are implemented as Python functions. if
, foreach
, set
, etc.. are normal Tcl constructs. post-configure
is a Python function that accepts, well, a Tcl code block that can later be executed (which in turns would obviously end up calling the above mentioned Python "functions").
Is this possible to do in Python? If so, how?
from Tkinter import *; root= Tk(); root.tk.eval('puts [array get tcl_platform]')
is the only integration I know of, which is obviously very limited (not to mention the fact that it starts up X11 server on mac).
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经过一些实验,我发现你可以做这样的事情来创建一个 tcl 解释器,注册一个 python 命令,并从 Tcl 调用它:
当我运行上面的代码时,我得到:
With a little experimentation I discovered you can do something like this to create a tcl interpreter, register a python command, and call it from Tcl:
When I run the above code I get:
@Brian - 我必须进行实验才能获得正确的结果,
请注意单引号和双引号的位置。这给了我预期的输出: hello, world
单引号或双引号的任何其他组合都会导致以下回溯:
--- fracjackmac
@Brian - I had to experiment in order to get the right result
Note the placement of the single and double quotes. This gave me the expected output: hello, world
Any other combinations of single or double quotes resulted in the following traceback:
--- fracjackmac