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Full Discussion: Advise on os.path in python
Homework and Emergencies Homework & Coursework Questions Advise on os.path in python Post 302801453 by maverick_here on Thursday 2nd of May 2013 03:52:30 AM
Old 05-02-2013
Advise on os.path in python
Use and complete the template provided. The entire template must be completed. If you don't, your post may be deleted!

1. The problem statement, all variables and given/known data:

I'm writing a python script to give me the number of files and directories in a given directory and I'm having varying results.

I have two scripts which I have written the first one does not work and second one works

I'm using Python 2.4.3 on CentOS 5.9

2. Relevant commands, code, scripts, algorithms:

Code:
#! /usr/bin/python
import os
os.system('clear')

x=raw_input('enter a path ')
print (x)
y=os.listdir(x)
print (y)
k=0
m=0
for a in y:
        if os.path.isfile(a):
                print (a)
                k=k+1
        elif os.path.isdir(a):
                m=m+1
                print (a)


print ('files are %d' % (k))
print ('dirs are %d' % (m))

When I run this I get an output as follows

Code:
[root@#### python]# python os2.py
enter a path /var
/var
files are 0
dirs are 1
[root@##### python]#

3. The attempts at a solution (include all code and scripts):

The following code I have written with few changes works.
Code:
#!/usr/bin/python

import os
os.system('clear')

x=raw_input('enter a path ')
os.chdir(x)  # change made
y=os.listdir('.')
m=0
k=0

for i in y:
        if os.path.isfile(i):
                print i
                m = m + 1
        elif os.path.isdir(i):
                print i
                k = k + 1

print ("%d is the number of files in %s" % (m,x))
print ("%d is the number of directories in %s" % (k,x))

Code:
[root@### python]# python ford.py
enter a path /var
0 is the number of files in /var
25 is the number of directories in /var

4. Complete Name of School (University), City (State), Country, Name of Professor, and Course Number (Link to Course):
Python Programming
Self - learning
Reference The Python Tutorial — Python v2.7.4 documentation

Note: Without school/professor/course information, you will be banned if you post here! You must complete the entire template (not just parts of it).
 

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LEARN ABOUT DEBIAN

isympy

isympy(1)																 isympy(1)

NAME

       isympy - interactive shell for SymPy

SYNOPSIS

       isympy [-c | --console]
       isympy [ {-h | --help} | {-v | --version} ]

DESCRIPTION

       isympy  is  a  Python shell for SymPy. It is just a normal python shell (ipython shell if you have the ipython package installed) that exe-
       cutes the following commands so that you don't have to:

       >>> from __future__ import division
       >>> from sympy import *
       >>> x, y, z = symbols("xyz")
       >>> k, m, n = symbols("kmn", integer=True)

       So starting isympy is equivalent to starting python (or ipython) and executing the above commands by hand. It  is  intended  for  easy  and
       quick  experimentation  with  SymPy. For more complicated programs, it is recommended to write a script and import things explicitly (using
       the "from sympy import sin, log, Symbol, ..." idiom).

OPTIONS

       -c shell, --console=shell
	      Use the specified shell (python or ipython) as console backend instead of the default one (ipython if present or python otherwise).

	      Example: isympy -c python

FILES

       ${HOME}/.sympy-history
	      Saves the history of commands when using the python shell as backend.

BUGS

       The upstreams BTS can be found at <http://code.google.com/p/sympy/issues/list> Please report all bugs that you find  in	there,	this  will
       help improve the overall quality of SymPy.

SEE ALSO

       ipython(1), python(1)

								     2007-10-8								 isympy(1)
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