Modernize Python 2 code to get ready for Python 3 AGAIN

[cclauss]

This is #220 done again on new code that was not cleaned up in #220 The approach is the same.

• On Python 2, this PR fixes incorrect noqa codes used in noqa to silence flake8 on Python 3 only syntax  #241 (F821 --> E999)
• On Python 3, this PR fixes print() as a function issues

This PR solves the following issues:

$ python2 -m flake8 . --count --select=E901,E999,F821,F822,F823 --show-source --statistics

./data_structures/Trie/Trie.py:15:32: E999 SyntaxError: invalid syntax
    def insert_many(self, words: [str]):  # noqa: F821 This syntax is Python 3 only
                               ^
./dynamic_programming/fastfibonacci.py:10:16: E999 SyntaxError: invalid syntax
def fibonacci(n: int):  # noqa: F821 This syntax is Python 3 only
               ^
2     E999 SyntaxError: invalid syntax

---

$ python3 -m flake8 . --count --select=E901,E999,F821,F822,F823 --show-source --statistics

./machine_learning/scoring_functions.py:73:13: E999 SyntaxError: invalid syntax
    print str(numerator)
            ^
./Project Euler/Problem 29/solution.py:30:28: E999 SyntaxError: invalid syntax
    print "Number of terms ", len(collectPowers)
                           ^
./dynamic_programming/abbreviation.py:29:14: E999 SyntaxError: invalid syntax
    print abbr("daBcd", "ABC") # expect True
             ^
./File_Transfer_Protocol/ftp_client_server.py:11:28: E999 SyntaxError: invalid syntax
print 'Server listening....'
                           ^
4     E999 SyntaxError: invalid syntax