Rename the folders.

0/0.py

@@ -1,4 +0,0 @@
-solution = 2 ** 38
-
-if __name__ == '__main__':
-    print(solution)

00/0.py

@@ -0,0 +1,11 @@
+from utils.Url import Url
+
+
+def main():
+    solution = 2 ** 38
+    builder = Url()
+    builder.solution = solution
+    print(builder.url)
+
+if __name__ == '__main__':
+    main()

01/cesar_shift.py

@@ -1,6 +1,5 @@
 import string
-
-URL = 'http://www.pythonchallenge.com/pc/def/map.html'
+from utils.Url import Url
 
 SECRET = ("g fmnc wms bgblr rpylqjyrc gr zw fylb. rfyrq ufyr amknsrcpq "
           "ypc dmp. bmgle gr gl zw fylb gq glcddgagclr ylb rfyr'q ufw "
@@ -27,13 +26,11 @@ def shift_chars(riddle_string, shift_by_int):
 
 def main():
     shifted_secret = shift_chars(SECRET, 2)
-    print('Shifted secret:', shifted_secret)
-    shifted_url = shift_chars(URL, 2)
-    print('Shifted url:', shifted_url)
-    new_url = URL.replace('map', shifted_url.split('/')[-1][:3])
-    print('New url:', new_url)
-
-
+    print(shifted_secret)
+    shifted_url = shift_chars('map', 2)
+    builder = Url()
+    builder.solution = shifted_url
+    print(builder.url)
 
 
 if __name__ == '__main__':

02/counter.py

@@ -0,0 +1,29 @@
+from collections import Counter
+
+from utils.Url import Url
+
+
+def count_string():
+    with open('string.txt') as file:
+        string = file.read()
+        return Counter(string)
+
+
+def get_lowest(counted_dict):
+    lowest_string = ''
+    for key in counted_dict:
+        if counted_dict[key] == 1:
+            lowest_string += key
+    return lowest_string
+
+
+def main():
+    counted = count_string()
+    lowest_string = get_lowest(counted)
+    builder = Url()
+    builder.solution = lowest_string
+    print(builder.url)
+
+
+if __name__ == '__main__':
+    main()

03/find_pattern.py

@@ -0,0 +1,23 @@
+from utils.Url import Url
+from utils.read import read_string
+import re
+
+
+def find_pattern(pattern_string):
+    string = read_string('string.txt')
+    regex = re.compile(pattern_string)
+    matches = regex.findall(string)
+    return ''.join(matches)
+
+
+def main():
+    pattern_string = r'[a-z][A-Z]{3}(?P<solution>[a-z]){01}[A-Z]{3}[a-z]'
+    string = find_pattern(pattern_string)
+    builder = Url()
+    builder.slug = 'php'
+    builder.solution = string
+    print(builder.url)
+
+
+if __name__ == '__main__':
+    main()

utils/Url.py

@@ -0,0 +1,53 @@
+class Url:
+    """
+    Class to build the python challenge url with the solution string and an
+    optional slug.
+    """
+
+    def __init__(self):
+        self._url = ''
+        self._slug = 'html'
+        self._solution = ''
+
+    BASE_URL = 'http://www.pythonchallenge.com/pc/def'
+
+    @property
+    def url(self):
+        """
+        Gets the url string of the builder.
+        :return: url string
+        """
+        return f'{self.BASE_URL}/{self.solution}.{self.slug}'
+
+    @property
+    def solution(self):
+        """
+        Returns the solution string
+        :return: solution string
+        """
+        return self._solution
+
+    @solution.setter
+    def solution(self, solution):
+        """
+        Sets the solution string
+        :param solution: str
+        """
+        self._solution = solution
+
+    @property
+    def slug(self):
+        """
+        Returns the slug string
+        :return: slug string
+        """
+        return self._slug
+
+    @slug.setter
+    def slug(self, slug):
+        """
+        Sets the slug string
+        :param slug: str
+        :return: slug string
+        """
+        self._slug = slug

utils/read.py

@@ -0,0 +1,14 @@
+"""
+Sone utility functions that can be reused for the python challenge.
+"""
+
+
+def read_string(path):
+    """
+    Read a string from a file provided by a path string.
+    :param path: A path string
+    :return: file content as a string
+    """
+    with open(path) as file:
+        string = file.read()
+        return string