[First Commit]

Primenumber generator

.gitignore

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+__pycache__/

cache/primenumbers/0

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+1

cache/primenumbers/1

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+2

cache/primenumbers/last_index

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+1

main.py

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+from primenumbers import primenumbers as pn
+
+
+if __name__ == "__main__":
+    P = pn()
+    P.generate(10000)

primenumbers.py

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+from util import read_file, write_file, append_file
+from sys import maxsize
+
+class primenumbers:
+    def __init__(self, cache: str = "./cache/primenumbers/") -> None:
+        self.p_last_index    : int
+        self.p_current_index : int
+        self.p_current_number: int
+
+        self.p_cache = cache
+
+        self.p_last_index = int(read_file(self.p_cache+"last_index")[0])
+        self.p_current_index = self.p_last_index + 1
+        self.p_current_number = int(read_file(self.p_cache+str(self.p_last_index))[0])
+        if self.p_current_number == maxsize:
+            print("Max int size reached!")
+            exit()
+        self.p_current_number += 1
+
+        print(f"Last index      : {self.p_last_index}")
+        print(f"Current index   : {self.p_current_index}")
+        print(f"Current number  : {self.p_current_number}")
+
+    def generate(self, iterations: int = -1):
+        print(f"Generating {iterations} primenumbers:")
+        iteration: int = 0
+        while(iterations == -1 or iteration < iterations):
+            is_primenumber = True
+            for i in range(1, self.p_current_index):
+                if self.check_modulo(self.p_current_number, int(read_file(self.p_cache+str(i))[0])):
+                    is_primenumber = False
+                    break
+            if is_primenumber:
+                print(f"\nPrimenumber found: {self.p_current_number}\n")
+                write_file(self.p_cache+str(self.p_current_index), str(self.p_current_number))
+                self.p_last_index = self.p_current_index
+                write_file(self.p_cache+"last_index", str(self.p_last_index))
+                self.p_current_index += 1
+            if self.p_current_number == maxsize:
+                print("Max int size reached!")
+                break
+            self.p_current_number += 1
+            iteration += 1
+
+    def check_modulo(self, a: int, b: int) -> bool:
+        return a % b == 0

util.py

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+def read_file(filepath: str) -> list[str]:
+    file = open(filepath, "r")
+    return file.readlines()
+
+def write_file(filepath: str, insert_string: str) -> bool:
+    file = open(filepath, "w")
+    file.write(insert_string)
+    file.close()
+
+def append_file(filepath: str, append_string: str) -> bool:
+    file = open(filepath, "a")
+    file.write(append_string)
+    file.close()