2 files changed, 89 insertions, 0 deletions
diff --git a/challenge-155/lubos-kolouch/python/ch-1.py b/challenge-155/lubos-kolouch/python/ch-1.py
new file mode 100644
index 0000000000..83820190de
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+++ b/challenge-155/lubos-kolouch/python/ch-1.py
@@ -0,0 +1,43 @@
+""" Challenge 155 LK Python Task 1"""
+from sympy import isprime, nextprime
+
+
+def get_pn(what: int) -> int:
+    """Get the pn needed for the formula"""
+    last_num = 1
+    pn = 1
+
+    for _ in range(1, what + 1):
+        last_num = nextprime(last_num)
+
+        pn *= last_num
+    return pn
+
+
+def find_fortunate_num(what: int) -> int:
+    """Find the respective fortunate number"""
+
+    num = 2
+    while not isprime(what + num):
+        num += 1
+
+    return num
+
+
+def get_n_fortunate_nums(what: int) -> list:
+    """Find the task solution"""
+
+    fortunate_nums = []
+
+    # * 2 number should be more than enough
+    for i in range(1, what * 2):
+        pn = get_pn(i)
+
+        fortunate = find_fortunate_num(pn)
+        fortunate_nums.append(fortunate)
+
+    fortunate_nums = list(sorted(set(fortunate_nums)))
+    return fortunate_nums[0 : what + 1]
+
+
+assert get_n_fortunate_nums(7) == [3, 5, 7, 13, 17, 19, 23, 37]
diff --git a/challenge-155/lubos-kolouch/python/ch-2.py b/challenge-155/lubos-kolouch/python/ch-2.py
new file mode 100644
index 0000000000..a681ea5e70
--- /dev/null
+++ b/challenge-155/lubos-kolouch/python/ch-2.py
@@ -0,0 +1,46 @@
+""" Challenge 155 Task 2 """
+
+import re
+
+
+class PisanoPeriod:
+    """Class for the challenge"""
+
+    def __init__(self) -> None:
+        self.fibs: list[int] = []
+        self.fib_hash: dict[int, int] = {}
+
+        self.fibs.append(0)
+        self.fibs.append(1)
+        self.fib_hash[0] = 1
+        self.fib_hash[1] = 1
+
+    def gen_more_fibs(self) -> None:
+        """Generate Fibonacci numbers of the fly"""
+        self.fibs.append(self.fibs[-1] + self.fibs[-2])
+
+    def get_pisano_period(self, what) -> int:
+        """Find out the period for the given what"""
+
+        all_nums = str(self.fibs[0]) + str(self.fibs[1])
+
+        period_len = 2
+        while 1:
+            period_len += 1
+            self.gen_more_fibs()
+            all_nums += str(self.fibs[-1] % what)
+
+            if re.search(r"^(.*)\1$", all_nums):
+                break
+        return period_len // 2
+
+
+def main() -> None:
+    """The main method"""
+
+    pisano_period = PisanoPeriod()
+    assert pisano_period.get_pisano_period(3) == 8
+
+
+if __name__ == "__main__":
+    main()