def main():
"""Read file of programming language details, save as objects, display."""
languages = []
# open the file for reading
in_file = open('languages.csv', 'r')
# file format is like: Language,Typing,Reflection,Year
# 'consume' the first line (header) - we don't need its contents
in_file.readline()
# all other lines are language data
for line in in_file:
# print(repr(line)) # debugging
# strip newline from end and split it into parts (CSV)
parts = line.strip().split(',')
# print(parts) # debugging
# reflection is stored as a string (Yes/No) and we want a Boolean
reflection = parts[2] == "Yes"
# construct a ProgrammingLanguage object using the elements
# year should be an int
language = ProgrammingLanguage(parts[0], parts[1], reflection,
int(parts[3]))
# add the language we've just constructed to the list
languages.append(language)
# close the file as soon as we've finished reading it
in_file.close()
# loop through and display all languages (using their str method)
for language in languages:
print(language)
from prac_08.programming_language import ProgrammingLanguage
# Create some instances
ruby = ProgrammingLanguage("Ruby", "Dynamic", True, 1995, False)
python = ProgrammingLanguage("Python", "Dynamic", True, 1991, False)
visual_basic = ProgrammingLanguage("Visual Basic", "Static", False, 1991,
False)
print(ruby)
# Create array
languages = [ruby, python, visual_basic]
# Filter language by is_dynamic()
dynamically_typed = [
language for language in languages if language.is_dynamic()
]
print("The dynamically typed languages are: ")
for typed in dynamically_typed:
print(typed.name)