在python中为Tcl调用不同的解释器 [英] Call different interpreter for Tcl in python

问题描述

我希望使用其他解释器来运行Tcl脚本( OpenSees )，类似于这个问题，最实用的方法是什么?我已经尝试过tkinter和子进程例程，但是据我了解，我是在纯Tcl中运行脚本，却没有任何反应(函数是在OpenSees环境中定义的). 我已经尝试过通过tkinter调用Tcl脚本，但是我终生无法弄清楚如何用另一个解释器运行tcl，我尝试过的是:

I wish to run a Tcl script with a different interpreter (OpenSees) from python itself, similar to this question, what would be the most practical way? I've tried tkinter and subprocess routines but as far as I understand i'm running the script in pure Tcl and nothing happens (functions are defined in the OpenSees environment). I've tried calling my Tcl script via tkinter and but I can't for the life of me figure out how to run tcl with another interpreter, what i've tried is:

for-test.tcl

for-test.tcl

proc fractional_while {j float_increment upper_limit} {
    while {$j < $upper_limit} {
        set j [expr $j + $float_increment]
    }
}
puts "time it took: [time {fractional_while 1 0.001 500} 1]"

python文件

import tkinter
r = tkinter.Tk()
r.eval('source {for-test.tcl}')

我想做的是在python中调用Opensees并运行以下例程:

What I want to do is call Opensees inside python and run the following routine:

elastic-1dof-spectrum.tcl

elastic-1dof-spectrum.tcl

model BasicBuilder -ndm 2 -ndf 3

set time_zero [clock clicks -millisec]

set node_restraint 1
set node_spring 2

...

set load_dir $x_direction
set x_mass 1
set elastic_modulus 2e6
set rotation_z 6

node $node_restraint 0 0 -mass 0 0 0
node $node_spring 0 0 -mass 0 0 0
fix $node_restraint 1 1 1

equalDOF $master_node $slave_node 1 2
geomTransf Linear $transf_tag

uniaxialMaterial Elastic $linear_elastic_mat_tag $elastic_modulus
element zeroLength 0 $node_restraint $node_spring -mat $linear_elastic_mat_tag -dir $rotation_z

set accel_series "Path -filePath acelerograma_85_ii.191 -dt $ground_motion_time_step -factor 1"
pattern UniformExcitation $load_tag $load_dir -accel $accel_series

set oscillator_length 1
set node_mass 3
set counter 1

while {$oscillator_length < 1000} {

set oscillator_length [expr $counter*0.1]
set node_mass [expr $counter + 2]

node $node_mass 0 $oscillator_length 
mass $node_mass $x_mass 0 0

element elasticBeamColumn $node_mass $node_spring $node_mass $area_column $elastic_modulus $inertia_column $transf_tag

set eigenvalue [eigen -fullGenLapack 1]
set period [expr 2*$pi/sqrt($eigenvalue)]

recorder EnvelopeNode -file results/acceleration-envelope-period-$period.out -time -node $node_mass -dof $x_direction accel
...

rayleigh [expr 2*$damping_ratio*$x_mass*$eigenvalue] 0 0 0
constraints Transformation 
# determines how dof constraits are treated and assigned
numberer Plain 
# numbering schemes are tied directly to the efficiency of numerical solvers
system BandGeneral
# defines the matricial numerical solving method based on the form of the stiffness matrix
test NormDispIncr 1e-5 10 0
integrator Newmark $gamma $beta
# defines the integrator for the differential movement equation
algorithm Newton
# solve nonlinear residual equation
analysis Transient
# for uniform timesteps in excitations
analyze [expr int($duration_motion/$time_step)] $time_step

incr counter
}

puts stderr "[expr {([clock clicks -millisec]-$time_zero)/1000.}] sec" ;# RS
wipe

推荐答案

这取决于OpenSees的构建方式及其提供的选项.

It depends on how OpenSees is built and what options it offers.

通常，嵌入Tcl的程序有两个主要选择方式，与Python非常相似.

Typically programs that embed Tcl have two main options how to do it, quite similar to Python.

变体之一是拥有一个普通的C/C ++主程序并链接到Tcl库，实际上，与tclsh相同，它是一个可以执行Tcl命令并静态提供额外命令的外壳.

Variant one is to have a normal C/C++ main program and link to the Tcl library, in effect the same thing tclsh does, a shell that can execute Tcl commands and providing extra commands statically.

第二种方式使用的是普通的tclsh，只是加载了一些扩展模块以添加功能.如果是这样的话，只要它们足够相似并且已经完成，您通常可以简单地将软件包加载到tkinter shell中.

Variant two is using a normal tclsh and just loading some extension modules to add the functionality. If that is the case, you can often simply load the package in the tkinter shell if they are similar enough, and are done.

OpenSees似乎是一个实现变体1的程序，这个变体包括了一些外部无法使用的额外命令.因此，您不能直接在tkinter shell中加载代码.

OpenSees seems to be a program that implements variant one, a bigwish that includes some extra commands not available outside. So you cannot load the code directly in a tkinter shell.

您有三个选择:

1. 使用Tcllib comm包之类的东西在Tkinter和OpenSees shell之间进行通信(请参阅

1. Use something like the Tcllib comm package to communicate between Tkinter and the OpenSees shell (see Running TCL code (on an existing TCL shell) from Python for an example)
2. Run opensees via subprocess and implement some kind of communication protocol to send your commands.
3. Hack at the OpenSees code to build it as a loadable package for Tcl and load it into your tkinter process (might be hard).

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