Fix tests

python/p0047.py

@@ -26,8 +26,8 @@
 from itertools import count
 from typing import Tuple
 
-from lib.primes import is_prime
 from lib.iters import groupwise
+from lib.primes import is_prime
 
 
 @lru_cache()

python/p0050.py

@@ -20,8 +20,8 @@
 """
 from typing import List
 
-from lib.primes import is_prime, primes
 from lib.iters import groupwise
+from lib.primes import is_prime, primes
 
 
 def main() -> int:

python/p0055.py

@@ -28,13 +28,14 @@
 NOTE: Wording was modified slightly on 24 April 2007 to emphasise the theoretical nature of Lychrel numbers.
 """
 from p0004 import is_palindrome
+
 from lib.iters import digits
 from lib.math import from_digits
 
 
 def steps_to_palindrome(n: int, depth: int = 0) -> int:
     """Returns a 0 if the number does not reach a palindrome in 50 or fewer steps, otherwise returns the step count"""
-    new = n + from_digits(reversed([*digits(n)]))
+    new = n + from_digits(digits(n))
     if is_palindrome(new):
         return depth + 1
     elif depth == 50:

python/p0057.py

@@ -40,7 +40,7 @@ def main() -> int:
     answer = 0
     for x in range(1_000):
         frac = root_two_expansion(x)
-        if len(digits(frac.numerator)) > len([*digits(frac.denominator)]):
+        if len([*digits(frac.numerator)]) > len([*digits(frac.denominator)]):
             answer += 1
     return answer
 

python/p0357.py

@@ -27,8 +27,8 @@
 """
 from typing import Iterable
 
-from lib.primes import is_prime, primes
 from lib.factors import proper_divisors
+from lib.primes import is_prime, primes
 
 
 def divisors(n: int) -> Iterable[int]: