simple string formatting question

[Neal Becker]

I have a list of strings (sys.argv actually). I want to print them as a
space-delimited string (actually, the same way they went into the command
line, so I can cut and paste)

So if I run my program like:
../my_prog a b c d

I want it to print:

'./my_prog' 'a' 'b' 'c' 'd'

Just print sys.argv will almost work, but it's comma-delimited.

There must be some clever way to do this. Any ideas?

 

[Bruno Desthuilliers]

Neal Becker a écrit :

I have a list of strings (sys.argv actually). I want to print them as a
space-delimited string (actually, the same way they went into the command
line, so I can cut and paste)

So if I run my program like:
./my_prog a b c d

I want it to print:

'./my_prog' 'a' 'b' 'c' 'd'

This should do what you want:

print " ".join("'%s'" % arg for arg in sys.argv)

NB : if your version of Python predates generator expressions, use a
list comp instead:

print " ".join(["'%s'" % arg for arg in sys.argv])

 

[Neil Cerutti]

I have a list of strings (sys.argv actually). I want to print them as a
space-delimited string (actually, the same way they went into the command
line, so I can cut and paste)

So if I run my program like:
./my_prog a b c d

I want it to print:

'./my_prog' 'a' 'b' 'c' 'd'

Just print sys.argv will almost work, but it's comma-delimited.

There must be some clever way to do this. Any ideas?

The csv module is clever. Try the following:

import sys
import csv

writer = csv.writer(sys.stdout, delimiter=' ', quotechar="'",
quoting=csv.QUOTE_ALL)
writer.writerow(sys.argv)

You might want to set a few more of the dialect options, too,
e.g., in case an arg contains a '.

The shutil module might contain something more specialized.