在函数运行时写入easygui文本框？

在函数运行时写入easygui文本框？

我认为没有任何简单的方法可以使EasyGUI的

textbox

功能完成您想要修改的模块。由于它是一个函数，而不是一个类，因此您甚至无法从中派生子类以轻松重用其代码。

但是，创建一个单独的

Tkinter

窗口是完全可行的，该窗口使用我在

comp.lang.python

新闻组的线程中一次发现的某些代码的增强版本，仅在发送文本行时显示这些文本行。

原始代码旨在捕获并仅显示

stderr

通常没有

stderr

输出句柄的GUI应用程序的输出，因此该模块名为

errorwindow

。但是，我对其进行了修改，以便能够将其重定向到我开发的一个基于应用程序的窗口，

stderr

并重定向

stdout

到此类窗口

easygui

，但是我从来没有回避重命名它或更新其中的注释以提及

stdout

重定向的问题。

;¬)

无论如何，该模块的工作方式是定义并创建一个文件类的两个实例，该实例在ed

OutputPipe

时命名

import

，并将它们分配给通常在Python
GUI应用程序（在Windows中）的

sys.stdout

和

sys.stderr

I /
O流文件对象。当输出首先被发送到的这些任一个中，相同的模块启动为具有其单独的Python过程，和I /
O控管道与原来的处理。

None``.pyw``stdin``stdout``stderr

发生了很多事情，但是如果没有其他事情，只需对其进行一些研究，可能会为您提供一些有关如何使

easygui

‘s

textbox

做自己想要的事情的想法。希望这可以帮助。

注意： 发布的代码是针对Python
2.x的，如果有人感兴趣的话，我对另一个问题的回答中有一个修改后的版本可以在Python
2和3中使用。

档案

errorwindow.py

：

# references:#   https://groups.google.com/d/msg/comp.lang.python/HWPhLhXKUos/TpFeWxEE9nsJ#   https://groups.google.com/d/msg/comp.lang.python/HWPhLhXKUos/eEHYAl4dH9YJ##   Here's a module to show stderr output from console-less Python#   apps, and stay out of the way otherwise. I plan to make a ASPN#   recipe of it, but I thought I'd run it by this group first.##   To use it, import the module. That's it. Upon import it will#   assign sys.stderr.##   In the normal case, your pre is perfect so nothing ever gets#   written to stderr, and the module won't do much of anything.#   Upon the first write to stderr, if any, the module will launch a#   new process, and that process will show the stderr output in a#   window. The window will live until dismissed; I hate, hate, hate#   those vanishing-consoles-with-critical-information.##   The pre shows some arguably-cool tricks. To fit everthing in#   one file, the module runs the Python interpreter on itself; it#   uses the "if __name__ == '__main__'" idiom to behave radically#   differently upon import versus direct execution. It uses TkInter#   for the window, but that's in a new process; it does not import#   TkInter into your application.##   To try it out, save it to a file -- I call it "errorwindow.py" -#   - and import it into some subsequently-incorrect pre. For#   example:##        import errorwindow##        a = 3 + 1 + nonesuchdefined##   should cause a window to appear, showing the traceback of a#   Python NameError.##   --#   --Bryan#   ----------------------------------------------------------------##   martineau - Modified to use subprocess.Popen instead of the os.popen#    which has been deprecated since Py 2.6. Changed so it#    redirects both stdout and stderr. Added numerous#    comments, and also inserted double quotes around paths#    in case they have embedded space characters in them, as#    they did on my Windows system."""    import this module into graphical Python apps to provide a    sys.stderr. No functions to call, just import it. It uses    only facilities in the Python standard distribution.    If nothing is ever written to stderr, then the module just    sits there and stays out of your face. Upon write to stderr,    it launches a new process, piping it error stream. The new    process throws up a window showing the error messages."""import subprocessimport sysimport threadimport osif __name__ == '__main__':  # when spawned as separate process    # create window in which to display output    # then copy stdin to the window until EOF    # will happen when output is sent to each OutputPipe created    from Tkinter import BOTH, END, frame, Text, TOP, YES    import tkFont    import Queue    queue = Queue.Queue(100)    def read_stdin(app, bufsize=4096):        fd = sys.stdin.fileno()  # gets file descriptor        read = os.read        put = queue.put        while True: put(read(fd, bufsize))    class Application(frame):        def __init__(self, master=None, font_size=8, text_color='#0000AA', rows=25, cols=100): frame.__init__(self, master) # argv[0]: name of this script (not used) # argv[1]: name of script that imported this module # argv[2]: name of redirected stream (optional) if len(sys.argv) < 3:     title = "Output Stream from %s" % (sys.argv[1],) else:     title = "Output Stream '%s' from %s" % (sys.argv[2], sys.argv[1]) self.master.title(title) self.pack(fill=BOTH, expand=YES) font = tkFont.Font(family='Courier', size=font_size) width = font.measure(' '*(cols+1)) height = font.metrics('linespace')*(rows+1) self.configure(width=width, height=height) self.pack_propagate(0)  # force frame to be configured size self.logwidget = Text(self, font=font) self.logwidget.pack(side=TOP, fill=BOTH, expand=YES) # Disallow key entry, but allow copy with <Control-c> self.logwidget.bind('<Key>', lambda x: 'break') self.logwidget.bind('<Control-c>', lambda x: None) self.logwidget.configure(foreground=text_color) #self.logwidget.insert(END, '==== Start of Output Stream ====nn') #self.logwidget.see(END) self.after(200, self.start_thread, ())        def start_thread(self, _): thread.start_new_thread(read_stdin, (self,)) self.after(200, self.check_q, ())        def check_q(self, _): log = self.logwidget log_insert = log.insert log_see = log.see queue_get_nowait = queue.get_nowait go = True while go:     try:         data = queue_get_nowait()         if not data:  data = '[EOF]'  go = False         log_insert(END, data)         log_see(END)     except Queue.Empty:         self.after(200, self.check_q, ())         go = False    app = Application()    app.mainloop()else: # when module is first imported    import traceback    class OutputPipe(object):        def __init__(self, name=''): self.lock = thread.allocate_lock() self.name = name        def __getattr__(self, attr): if attr == 'pipe':  # pipe attribute hasn't been created yet     # launch this module as a separate process to display any output     # it receives.     # Note: It's important to put double quotes around everything in case     # they have embedded space characters.     command = '"%s" "%s" "%s" "%s"' % (sys.executable,     # command       __file__,# argv[0]       os.path.basename(sys.argv[0]), # argv[1]       self.name)          # argv[2]     # sample command and arg values on receiving end:     #   E:Program FilesPythonpython[w].exe   # command     #   H:PythonLibTestscriptsPyRemindWrkerrorwindow.py# argv[0]     #   errorwindow.py    # argv[1]     #   stderr # argv[2]     # execute this script as __main__ with a stdin PIPE for sending output to it     try:         # had to make stdout and stderr PIPEs too, to make it work with pythonw.exe         self.pipe = subprocess.Popen(command, bufsize=0,     stdin=subprocess.PIPE,     stdout=subprocess.PIPE,     stderr=subprocess.PIPE).stdin     except Exception:         # output exception info to a file since this module isn't working         exc_type, exc_value, exc_traceback = sys.exc_info()         msg = ('%r exception in %sn' %      (exc_type.__name__, os.path.basename(__file__)))         with open('exc_info.txt', 'wt') as info:  info.write('msg:' + msg)  traceback.print_exc(file=info)         sys.exit('fatal error occurred spawning output process') return super(OutputPipe, self).__getattribute__(attr)        def write(self, data): with self.lock:     self.pipe.write(data)  # 1st reference to pipe attr will cause it to be created    # redirect standard output streams in the process importing the module    sys.stderr = OutputPipe('stderr')    sys.stdout = OutputPipe('stdout')