Python - Android logcat output of stdout to textview then save to .txt file error -

i have following python code, uses android logcat via stdout pull logs off phone wxpython text field. login app, username jack , password jack@123$ logcat output stops error, seems not @ or $ symbols:

    return codecs.charmap_decode(input,errors,decoding_table) unicodedecodeerror: 'charmap' codec can't decode byte 0x9d in position 76: character maps <undefined> 

or when try getvalue() of text control save .txt file open writing:

unicodeencodeerror: 'ascii' codec can't encode characters in position  204447-204449: ordinal not in range(128) 

the code logcat function follows

def logcat(self):    params = [toolsdir + "\\adb.exe", "logcat"]    p = popen(params, stdout=subprocess.pipe, bufsize=1)    line in p.stdout:        #line = line.decode('latin-1')        self.progressbox.appendtext(line)  def savelog(self,e):     f = open(outdir + '\\' + pkgname + '\\' + pkgname + '_logcat.txt', 'w')     f.write(self.progressbox.getvalue())     f.close() 

what correct way of implementing decoding these symbols using stdout. thanks

edit: answer follows, had decode('utf-8') stdout textbox, encode('utf-8') when writing file.

    line in p.stdout:         self.progressbox.appendtext(line.decode('utf-8'))       f.write(self.progressbox.getvalue().encode('utf-8'))