Add type hints in problems 55-60

Python/p055.py

@@ -26,7 +26,7 @@
 from projecteuler import is_palindrome, timing
 
 
-def is_lychrel(n):
+def is_lychrel(n: int) -> bool:
     tmp = n
 
     # Run for 50 iterations
@@ -52,7 +52,7 @@ def is_lychrel(n):
 
 
 @timing
-def p055():
+def p055() -> None:
     count = 0
 
     # For each number, use the is_lychrel function to check if the number

Python/p056.py

@@ -9,7 +9,7 @@ from projecteuler import timing
 
 
 @timing
-def p056():
+def p056() -> None:
     max_ = 0
 
     # Straightforward brute force approach

Python/p057.py

@@ -20,7 +20,7 @@ from projecteuler import timing
 
 
 @timing
-def p057():
+def p057() -> None:
     n = 1
     d = 1
     count = 0

Python/p058.py

@@ -20,7 +20,7 @@ from projecteuler import is_prime, timing
 
 
 @timing
-def p058():
+def p058() -> None:
     # Starting with 1, the next four numbers in the diagonal are 3 (1+2), 5 (1+2+2), 7 (1+2+2+2)
     # and 9 (1+2+2+2+2). Check which are prime, increment the counter every time a new prime is
     # found, and divide by the number of elements of the diagonal, which are increase by 4 at

Python/p059.py

@@ -19,19 +19,19 @@
 # ASCII values in the original text.
 
 import sys
+from typing import List
 
 from projecteuler import timing
 
 
 class EncryptedText():
 
-    def __init__(self, *args, **kwargs):
+    def __init__(self) -> None:
-        super().__init__(*args, **kwargs)
+        self.text: List[int]
-
+        self.text = []
-        self.text = None
         self.len = 0
 
-    def read_text(self, filename):
+    def read_text(self, filename: str) -> int:
         try:
             with open(filename, 'r', encoding='utf-8') as fp:
                 self.text = list(map(int, list(fp.readline().split(','))))
@@ -44,7 +44,7 @@ class EncryptedText():
 
         return 0
 
-    def decrypt(self):
+    def decrypt(self) -> str:
         found = 0
 
         for c1 in range(ord('a'), ord('z')+1):
@@ -72,17 +72,17 @@ class EncryptedText():
                     if i == self.len - 1:
                         plain_text[i] = str(chr(self.text[i] ^ c1))
 
-                    plain_text = ''.join(plain_text)
+                    plain_text_str = ''.join(plain_text)
 
-                    if 'the' in plain_text and 'be' in plain_text and 'to' in plain_text and 'of' in plain_text and\
+                    if 'the' in plain_text_str and 'be' in plain_text_str and 'to' in plain_text_str and 'of' in plain_text_str and\
-                            'and' in plain_text and 'in' in plain_text and 'that' in plain_text and 'have' in plain_text:
+                            'and' in plain_text_str and 'in' in plain_text_str and 'that' in plain_text_str and 'have' in plain_text_str:
                         found = 1
 
-        return plain_text
+        return plain_text_str
 
 
 @timing
-def p059():
+def p059() -> None:
     enc_text = EncryptedText()
 
     if enc_text.read_text('p059_cipher.txt') == -1:

Python/p060.py

@@ -10,7 +10,7 @@ from projecteuler import is_prime, sieve, timing
 
 
 @timing
-def p060():
+def p060() -> None:
     N = 10000
 
     primes = sieve(N)