challenges.py

#
# Write a function to produce the first n odd numbers
# eg calling odd_numbers(5) would give 1, 3, 5, 7, 9
#
def odd_numbers(n):
    raise NotImplementedError


#
# A triangular number is the sum of all the numbers up to that number
# So 6 is a triangular number (1 + 2 + 3) and so is 21 (1 + 2 + 3 + 4 + 5 + 6)
#
# Write a function to produce the first n triangular numbers
#
def triangular_numbers(n):
    raise NotImplementedError


#
# A word or phrase is a palindrome if it reads the same backwards
# and forwards. So the name "Anna" is a palindrome; and so is the phrase
# "A man, a plan, a canal - Panama!" (if you ignore punctuation)
# [https://en.wikipedia.org/wiki/Panama_Canal]
#
# Detect whether the text entered is a palindrome, accounting only for
# letters (not punctuation) and ignoring case differences
#
def is_a_palindrome(text):
    raise NotImplementedError


#
# Use the data in the "rail-passenger-journeys.csv" file
# Which year had the highest number of rail passengers?
#
def highest_number_of_passengers(filename="rail-passenger-journeys.csv"):
    raise NotImplementedError


#
# Use the data in the "rail-passenger-journeys.csv" file
# Produce an iterable of the changes between years
# eg (1956, 1957, 35), (1957, 1958, 72), ...
#
def yearly_changes(filename="rail-passenger-journeys.csv"):
    raise NotImplementedError


#
# Use the data in the "forestry-money.csv" file
# Produce an iterable showing how much was spent with
# each Supplier
# eg (Advanced Business Solutions, 12345.67), (Business Computers Ltd, 98765.43), ...
#
def spend_by_supplier(filename="forestry-money.csv"):
    raise NotImplementedError


#
# Use the data in the "forestry-money.csv" file
# Produce a *graph* showing how much was spent with each Supplier
#
def spend_by_supplier_graph(filename="forestry-money.csv"):
    raise NotImplementedError


#
# Manually save a passage of text from "bleak-house.txt" into another file
#
# Produce a new text equivalent except that all opening and closing quotes have
# been replaced by the appropriate start/end quotes characters
#
# Opening single quote is codepoint 2018; Closing single quote is 2019
# Open double quotes is codepoint 201C; Closing double quotes is 201D
#
def smart_quotes(text):
    raise NotImplementedError