Asad wrote: > Hi All, > > I used your solution , however found a strange issue with deque > : > > I am using python 2.6.6:
Consider switching to Python 3; my code as posted already works with that. >>>> import collections >>>> d = collections.deque('abcdefg') >>>> print 'Deque:', d > File "<stdin>", line 1 > print 'Deque:', d > ^ > SyntaxError: invalid syntax This is the effect of a from __future__ import print_function import. Once that is used print becomes a function and has to be invoked as such. If you don't want this remove the "from __future__ print_function" statement and remove the parentheses from all print-s (or at least those with multiple arguments). Note that in default Python 2 print("foo", "bar") works both with and without and parens, but the parens constitute a tuple. So >>> print "foo", "bar" # print statement with two args foo bar >>> print ("foo", "bar") # print statement with a single tuple arg ('foo', 'bar') >>> from __future__ import print_function >>> print "foo", "bar" # illegal, print() is now a function File "<stdin>", line 1 print "foo", "bar" ^ SyntaxError: invalid syntax >>> print("foo", "bar") # invoke print() function with two args foo bar _______________________________________________ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: https://mail.python.org/mailman/listinfo/tutor