GUI Execute Commands
Here’s my Python – TKinter App that takes a set of Shell Commands from a .json file and displays them for individual execution when a button is clicked. Write these frequently used commands once and let the GUI program remember their syntax.
Keep 3 files in the same directory:
- guiExecuteCommands.py The TKInter Program
- config.json The Configuration Data
- cmds.json The Initial Command Set
Contents
- The TKInter Program File – guiExecuteCommands.py
- The Configuration Data File – config.json
- The Initial Command Set – cmds.json
- A Screenshot of the TKInter Program
- A run log of the program
The TKInter Program File – guiExecuteCommands.py
Here is the guiExecuteCommands.py file.
#!/usr/bin/python
# -*- coding: utf-8 -*-
# guiExecuteCommands.py
import sys, os, time, subprocess, json, atexit
# if not('.' in sys.path): sys.path.append('.')
# from MyCommands import cmds
import Tkinter, tkFileDialog
class Theapp(Tkinter.Tk):
def __init__(self,parent):
# joe's init
with open('config.json') as data_file:
cfg_data = json.load(data_file)
self.cfg_data = cfg_data
with open(cfg_data[0]['commandsf']) as data_file:
cmds = json.load(data_file)
self.cmds = cmds
atexit.register(self.on_exit) # http://stackoverflow.com/a/28664350/601770
# /joe's init
Tkinter.Tk.__init__(self,parent)
self.parent = parent
self.initialize()
def on_exit(self):
''' http://stackoverflow.com/a/28664350/601770
save the state that has been changed
'''
self.cfg_data[0]['workingd'] = self.cwd.get()
print "self.cwd.get(): %s"%(self.cwd.get())
print "self.cfg_data: %s"%(self.cfg_data)
with open('config.json', 'w') as f:
json.dump(self.cfg_data, f)
def execute_cmd(self, rnum):
''' C:\1d\PythonPjs\subprocessPjs\executeCommandsPj\executeCommands\executeCommands.py
'''
commandstring = self.cmd_entries[rnum].get()
cwdpath = self.cwd.get()
outstr = subprocess.check_call(commandstring, cwd=cwdpath, shell=True) # Convenience Function
print outstr
## http://stackoverflow.com/a/16777523/601770
def bclick(self, rnum):
def click():
self.execute_cmd(rnum)
return click
def browse2cwd(self):
"""
http://stackoverflow.com/questions/11295917/how-to-select-a-directory-and-store-the-location-using-tkinter-in-python
http://tkinter.unpythonic.net/wiki/tkFileDialog
find "def askdirectory(self):"
"""
tkFileDiaOpt4Dir = {}
tkFileDiaOpt4Dir['initialdir'] = self.cwd.get()
tkFileDiaOpt4Dir['mustexist'] = False
tkFileDiaOpt4Dir['parent'] = self
tkFileDiaOpt4Dir['title'] = 'Browse to set CWD.'
self.cwd.set( tkFileDialog.askdirectory(**tkFileDiaOpt4Dir) )
print "browse2cwd: self.cwd.get(): %s"%(self.cwd.get())
def initialize(self):
self.cwd = Tkinter.StringVar()
self.cwd.set(self.cfg_data[0]['workingd'])
self.grid() # make this be a grid
### add the gui elements in here
## browse to working directory
label = Tkinter.Label(self, text="Working Directory", fg="white",bg="blue")
label.grid(column=0,row=0,columnspan=3,sticky='W')
self.cwd_entry = Tkinter.Entry(self, width=80, textvariable=self.cwd)
self.cwd_entry.grid(column=0,row=1,columnspan=2, sticky='W') # http://effbot.org/tkinterbook/entry.htm
b = Tkinter.Button(self,text=u"Browse", command=self.browse2cwd)
b.grid(column=2,row=1)
toprowscount = 2
## command row elements len == len(MyCommands.cmds)
self.buttons = []
self.cmd_entries = []
for rnum, cmd in enumerate(self.cmds):
label = Tkinter.Label(self, anchor="w",text=cmd['label'], fg="white",bg="blue")
label.grid(column=0,row=rnum+toprowscount,sticky='EW')
self.cmd_entries.append( Tkinter.Entry(self, width=60) )
self.cmd_entries[-1].grid(column=1,row=rnum+toprowscount,sticky='EW'); self.cmd_entries[-1].insert(0, (cmd['cmd']+' '+ cmd['args']))
b = Tkinter.Button(self,text=u"Ex%s"%(rnum), command=self.bclick(rnum))
b.grid(column=2,row=rnum+toprowscount)
self.buttons.append(b)
## Finish up
self.grid_columnconfigure(0,weight=1) # make resizable
self.resizable(True,False) # make resizable ONLY HORIZONTALLY
if __name__ == "__main__":
app = Theapp(None)
app.title('Gui Execute Comands')
app.mainloop()
The Configuration Data File – config.json
Here is the config.json file.
[{
"programd": "C:\\1d\\PythonPjs\\GUIpjs\\guiExecuteCommandPj\\guiExecuteCommand",
"commandsf": "C:\\1d\\PythonPjs\\GUIpjs\\guiExecuteCommandPj\\guiExecuteCommand\\cmds.json",
"configd": "C:\\1d\\PythonPjs\\GUIpjs\\guiExecuteCommandPj\\guiExecuteCommand",
"workingd": "C:/1d/CrossPlatformPjs/CordovaPjs/cordovaAngular00Pj/cordovaAngular00"
}]
The Initial Command Set – cmds.json
Here is the (INITIAL) cmds.json file
[
{"cmd": "cordova", "args": "run android", "label": "android build 4 device"},
{"cmd": "cordova", "args": "emulate android", "label": "android build 4 emulation"},
{"cmd": "dir", "args": "*", "label": "dir of working dir"}
]
A Screenshot of the TKInter Program
Here is a screenshot of the program.
A run log of the program
Here is a run log.
Note: if the user changed the working directory, on exit the new working directory will be saved in the config.json file.
C:\1bat\guiExecuteCommands>guiExecuteCommands.py
browse2cwd: self.cwd.get(): C:/1d/CrossPlatformPjs/Building Single Page Web Apps with AngularJS PJ
Volume in drive C is Windows
Volume Serial Number is F2FB-4810
Directory of C:\1d\CrossPlatformPjs\Building Single Page Web Apps with AngularJS PJ
12/23/2015 09:58 AM <DIR> .
12/23/2015 09:58 AM <DIR> ..
12/23/2015 11:11 AM <DIR> zetc
0 File(s) 0 bytes
3 Dir(s) 900,352,217,088 bytes free
0
self.cwd.get(): C:/1d/CrossPlatformPjs/Building Single Page Web Apps with AngularJS PJ
self.cfg_data: [{u'programd': u'C:\\1d\\PythonPjs\\GUIpjs\\guiExecuteCommandPj\\guiExecuteCommand', u'commandsf': u'C:\\1d\\PythonPjs\\GUIpjs\\guiExecuteCommandPj\\guiExecuteCommand\\cmds.json', u'configd': u'C:\\1d\\PythonPjs\\GUIpjs\\guiExecuteCommandPj\\guiExecuteCommand', u'workingd': u'C:/1d/CrossPlatformPjs/Building Single Page Web Apps with AngularJS PJ'}]
C:\1bat\guiExecuteCommands>
Joe Codeswell - Notes to Myself and Others 