I want to select a file by numbers at left side of listing but I can't go more than this:
import os
path="/root/Desktop"
dirList=os.listdir(path)
for fname in dirList:
print fname
selected = raw_input("Select a file above: ")
What should I do?
Example:
http://img502.imageshack.us/img502/4407/listingy.png
Thank you in advance..
You should use enumerate for the list and then handle input errors. Ideally this would be a function and instead of doing a break you would just return the selected file.
import os
path="/root/Desktop"
dirList=os.listdir(path)
for i, fname in enumerate(dirList):
print "%d) %s" % (i + 1, fname)
while True:
try:
selectedInt = int(raw_input("Select a file above: "))
selected = dirList[selectedInt - 1]
break
except Exception:
print "Error: Please enter a number between 1 and %d" % len(dirList)
for i, fname in enumerate(dirList):
print "%s) %s" % (i + 1, fname)
selectedInt = int(raw_input("Select a file above: "))
selected = dirList[selectedInt - 1]
However, note that there is no error correction done. You should catch cases, where the input is no integer.
You could try the following :
import os
path="/root/Desktop"
dirList=os.listdir(path)
for i in range(0,len(dirList)): # generate an index an loop over it
print "%d)" % (i+1), dirList[i] # print a selection number matching each file
selected = raw_input("Select a file above: ")
selected = int(selected) # cast the input to int
print "You have selected:", dirList[selected-1] # you can get the corresponding entry!
That should do the trick :)
enumerate so as to generate the index in the same time the list is iterated over.You know the filename at a specific index so you can just do something like this:
import os
path="/root/Desktop"
dirList=os.listdir(path)
for index in range(0,len(dirList)):
print str(index+1) + ": " + dirList[index]
selected = raw_input("Select a file above: ")
print "You selected filename: " + dirList[selected];
edit: oops to slow
Try this:
import os
listed_files = []
for i, fname in enumerate(os.listdir("/root/Desktop")):
print i, ': ', fname
listed_files.append(fname)
selected = raw_input("Select a file above: ")
open("/root/Desktop/%s" % listed_files[int(selected)])
Create a dictionary where the key is an index and the value is the filename (use enumerate(dirList) to get a tuple of (index, filename) per iteration). Then just pull the corresponding value based on the input (key).
