[Tutor] my first gui
Lie Ryan
lie.1296 at gmail.com
Wed Jun 3 18:20:20 CEST 2009
prasad rao wrote:
> Hello.
> I made my first mager gui program.I need your openions suggestions and
> improvements.
>
>
> #! usr\\bin\\env python
Why is the shebang like that?
> from Tkinter import *
importing * is considered namespace pollution since you cannot control
what name would be introduced to the global namespace. Better to use the
regular "import Tkinter" (Tips: typing Tkinter for every control is
often distracting, I usually do "import Tkinter as Tk" to shorten it,
much better than import *)
> def myfiles (n='',m=''):
> import os
> mf=[os.path.join(x,i)for x,y,z in os.walk(n) for i in z if
> i.endswith(m)]
>
> return mf
>
> def fshow():
> tclear()
> x=entry1.get()
>
> try:
> value1,value2=x.split(',')
> mf=myfiles(value1,value2)
>
> text.insert(END,('Total files in %s are %d
> \n'%(entry1.get(),len(mf)))+ mystring(mf))
> except:
> mf=myfiles(x)
> text.insert(END,('Total files in %s are %d
> \n'%(entry1.get(),len(mf)))+ mystring(mf))
> def atime(x):
>
> import time
> import os
> atime=time.strftime("%c",time.localtime(os.path.getatime(x)))
> return atime
The way you're doing right now will import time and os every function
call. Although python interpreter is smart enough to not reiimport a
module twice, for various reasons it is usually better to place all
imports on the top of the module.
> def mtime(x):
>
> import time
> import os
> mtime=time.strftime("%c",time.localtime(os.path.getmtime(x)))
> return mtime
>
> def ctime(x):
> import time
> import os
> ctime=time.strftime("%c",time.localtime(os.path.getctime(x)))
> return ctime
> def mystring(x):
> q=''
> for n,m in enumerate(x,start=1):
>
> o=str(n)+'.'+str(m)
you could use %=formatting there
o = '%s.%s' % (n, m)
> q+=(o+'\n')
> return q+'\n'
>
> def info():
> tclear()
> import glob,os
> mf=''
> md=''
> mfl,mdl=[],[]
> mdd=glob.glob(entry1.get()+os.sep+'*')
> for x in mdd:
> if os.path.isfile(x)==True:
in python, you usually don't test against True in an if statement
(though it won't really matter)
if os.path.isfile(x):
pass
> mfl.append(x)
I assume this line should appear more indented, probably the mail client
is playing some tricks...
> else:mdl.append(x)
>
> mf+=mystring(mfl)
> md+=mystring(mdl)
> mf=("Total files in %s are %d \n\n"%(entry1.get(),len(mfl)))+mf
> md=('Total directories in %s are %d
> \n\n'%(entry1.get(),len(mdl)))+md
> mf+='\n\n'
> text.insert(END,mf+md)
What's wrong with the indentation? Is this the mail client messing
things up or you should use consistent indentation. PEP 8
(http://www.python.org/dev/peps/pep-0008/ ) recommends 4 spaces. Now
we're talking about PEP 8; I should also mention that the recommended
way to style your code is like this:
def func(a, b, c=2, d=3):
e = a + b
r = calling(a, s='John')
you can read the details in the PEP 8 link. Basically space after
commas, and space on both side of operators; whitespace on assignment =
except on function argument assignment.
> def destroy():
> root.destroy()
> def eclear():
> entry1.delete(0,END)
> entry2.delete(0,END)
> entry3.delete(0,END)
> entry4.delete(0,END)
> def tclear():
> text.delete(1.0,END)
> def ashow():
> x=entry1.get()
> try:
> n,m=x.split(',')
>
> value=atime(n)
> except:value=atime(x)
don't use bare except; catch only the specific exception you want to catch.
> entry2.insert(0,value)
> def mshow():
>
> x=entry1.get()
> try:
> n,m=x.split(',')
>
> value=mtime(n)
> except:value=mtime(x)
>
> entry3.insert(0,value)
> def cshow():
>
> x=entry1.get()
> try:
> n,m=x.split(',')
>
> value=ctime(n)
> except:value=ctime(x)
> entry4.insert(0,value)
You could use an
if __name__ == '__main__':
here
> root = Tk()
>
> frame1=Frame(root,relief='sunken',border=1)
> frame1..pack(side='top',expand="true")
>
> frame2=Frame(root,relief='sunken',border=1)
> frame2.pack(side='top',expand="true")
>
> frame3=Frame(root,relief='sunken',border=1)
> frame3.pack(side='top',expand="true")
>
> frame4=Frame(root,relief='sunken',border=1,)
> frame4.pack(side='top',expand="true")
>
> frame5=Frame(root,relief='sunken',border=1)
> frame5.pack(side='top',expand="true")
>
> label5=Label(frame1,text="Enter file path to get information about the
> file \
> or enter directory(or directory,fileextension) to get files init ",border=1)
> label5.pack(side='top',fill='both')
>
> b1=Button(frame2,text='quit',command=destroy,border=1)
> b1.pack(side='left',padx=5,pady=5)
>
> b2=Button(frame2,text='clear',command=eclear,border=1)
> b2.pack(side='left',padx=5,pady=5)
>
> b3=Button(frame2,text='accessed',command=ashow,border=1)
> b3.pack(side='left',padx=5,pady=5)
>
> b4=Button(frame2,text='modified',command=mshow,border=1)
> b4.pack(side='left',padx=5,pady=5)
>
> b5=Button(frame2,text='created',command=cshow,border=1)
> b5.pack(side='left',padx=5,pady=5)
>
> b5=Button(frame2,text='files',command=fshow,border=1)
> b5.pack(side='left',padx=5,pady=5)
>
> b6=Button(frame2,text='deltxt',command=tclear,border=1)
> b6.pack(side='left',padx=5,pady=5)
>
> b7=Button(frame2,text='files+dirs',command=info,border=1)
> b7.pack(side='left',padx=5,pady=5)
>
> label4=Label(frame3,text="Enter full path",border=1)
> label4.pack(side='left',fill='both')
>
> entry1=Entry(frame3,relief='sunken',border=1)
> entry1.pack(side='left',fill='both')
>
> lable1=Label(frame3,text='access time',border=1)
> lable1..pack(side='left',fill='both')
>
> entry2=Entry(frame3,relief='sunken',border=1)
> entry2.pack(side='left',fill='both')
>
> lable2=Label(frame3,text='modifide time',border=1)
> lable2.pack(side='left',fill='both')
>
> entry3=Entry(frame3,relief='sunken',border=1)
> entry3.pack(side='left',fill='both')
>
> lable3=Label(frame3,text='created time',border=1)
> lable3.pack(side='left',fill='both')
>
> entry4=Entry(frame3,relief='sunken',border=1)
> entry4.pack(side='left',fill='both')
Instead of names like entry1, entry2, entry3, and entry4 you should use
a more descriptive name like path, accesstime, modtime, createdtime. I
usually use a plain name (e.g. path) for the most significant GUI
element and a plain name++ (e.g. path_label) for GUI element that
describes the main elements.
> text=Text(frame4,relief='sunken',border=1,width=130,height=40,padx=5,pady=5)
> text.pack(side='top')
> text.xview(SCROLL,30,UNITS)
> text.yview(SCROLL,30,UNITS)
>
> root.title("info of file")
>
> root.mainloop()
>
> ==
>
> Thank you
>
> Prasad
>
>
>
>
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>
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