20 May 2008

Python Command Line (-c option) Test 2

Julian W. suggested that I write a one line Python loop for my command scripts instead of map(), as in my earlier article. Instead of map(lambda l: expression(l), sys.stdin), I could write for l in sys.stdin: expression(l). An example trivial command to echo all input lines would be:

python -c "import sys; for line in sys.stdin: print line,"

Problem is that the Python interpreter complains:

  File "", line 1
    import sys; for line in sys.stdin: print line,
                  ^
SyntaxError: invalid syntax