boilerplates.py

from codecs import open

def read_number_from_file(filepath, codec = "utf-8", split = None):
    if "C" not in filepath:
        filepath = "D:\\AdventOfCode2019\\probleminput\\" + filepath + ".txt"
    if split is None:
        with open(filepath, "r", codec) as file:
            file = file.readlines()
            try:
                lines = [int(i) for i in file]
            except ValueError:
                split = [i for i in file[0] if i not in "0123456789"][0]
                print("Did you mean to specify an seperator? Trying:", split)
                lines = [int(i) for i in file[0].split(split)]
    else:
        with open(filepath, "r", codec) as file:
            if split == "":
                lines = []
                for line in file.readlines():
                    lines.append([int(i) for i in line.strip()])
            else:
                lines = [int(i) for i in file.readline().split(split)]
    return lines

def read_text_from_file(filepath, codec = "utf-8", split = None, nostrip = False):
    if "C" not in filepath:
        filepath = "D:\\AdventOfCode2019\\probleminput\\" + filepath + ".txt"
    if split is None:
        if nostrip:
            with open(filepath, "r", codec) as file:
                lines = file.read().splitlines()
        else:
            with open(filepath, "r", codec) as file:
                lines = [line.strip() for line in file.readlines()]
    else:
        if nostrip:
            with open(filepath, "r", codec) as file:
                lines = [[j for j in i.split(",")] for i in file.readlines()]
        else:
            with open(filepath, "r", codec) as file:
                lines = [[j.strip() for j in i.split(",")] for i in file.readlines()]
    return lines

def flatten_list(n):
    nested_list = n[:]
    while nested_list:
        sublist = nested_list.pop(0)
        if isinstance(sublist, list):
            nested_list = sublist + nested_list
        else:
            yield sublist