From 696cd47e154e17c35520a734ff19d98b41f3f443 Mon Sep 17 00:00:00 2001 From: mohammadreza490 <47437328+mohammadreza490@users.noreply.github.com> Date: Thu, 10 Sep 2020 09:37:29 +0100 Subject: [PATCH] octal_to_decimal converter (#2399) * Create octal_to_decimal octal to decimal converter * Update octal_to_decimal * Update conversions/octal_to_decimal Co-authored-by: Christian Clauss Co-authored-by: Christian Clauss --- conversions/octal_to_decimal | 37 ++++++++++++++++++++++++++++++++++++ 1 file changed, 37 insertions(+) create mode 100644 conversions/octal_to_decimal diff --git a/conversions/octal_to_decimal b/conversions/octal_to_decimal new file mode 100644 index 000000000..a5b027e3a --- /dev/null +++ b/conversions/octal_to_decimal @@ -0,0 +1,37 @@ +def oct_to_decimal(oct_string: str) -> int: + """ + Convert a octal value to its decimal equivalent + + >>> oct_to_decimal("12") + 10 + >>> oct_to_decimal(" 12 ") + 10 + >>> oct_to_decimal("-45") + -37 + >>> oct_to_decimal("2-0Fm") + ValueError: Non-octal value was passed to the function + >>> oct_to_decimal("") + ValueError: Empty string value was passed to the function + >>> oct_to_decimal("19") + ValueError: Non-octal value was passed to the function + """ + oct_string = str(oct_string).strip() + if not oct_string: + raise ValueError("Empty string was passed to the function") + is_negative = oct_string[0] == "-" + if is_negative: + oct_string = oct_string[1:] + if not all(0 <= int(char) <= 7 for char in oct_string): + raise ValueError("Non-octal value was passed to the function") + decimal_number = 0 + for char in oct_string: + decimal_number = 8 * decimal_number + int(char) + if is_negative: + decimal_number = -decimal_number + return decimal_number + + +if __name__ == "__main__": + from doctest import testmod + + testmod()