done with some func while others fail to pass

functions_to_test.py

@@ -1,34 +1,90 @@
 # Placeholder functions for Python basics, to be implemented later
 
 def add_numbers(a, b):
-    pass
+    return a+b
 
 def find_maximum(a, b, c):
-    pass
+    return max(a,b,c)
 
 def is_palindrome(string):
-    pass
+    return string[::-1] == string
 
 def count_word_occurrences(text, word):
-    pass
+    return text.count(word)
 
 def read_file_lines(filepath):
-    pass
+    counter = 0
+    with open(filepath, "r") as file:
+        for line in file.readline():
+            counter += 1
+    return counter
+
 
 def factorial(n):
-    pass
+    try:
+        counter = 1
+        if n < 0:
+            raise ValueError
+        elif n == 0 or n == 1:
+            return counter
+        else:
+            for i in range(n, 1, -1):
+                counter *= i
+            return counter
+    except TypeError:
+        pass
 
 def is_prime(n):
-    pass
+    if n < 0 :
+        raise ValueError
+    else:
+        counter = 0
+        for i in range(1, n+1):
+            if n % i == 0:
+                counter += 1
+        if counter == 2:
+            return True
+        else:
+            return False
 
 def sort_numbers(numbers):
-    pass
-
+    try:
+        for i in numbers:
+            if i is int:
+                if numbers == []:
+                    return []
+                else:
+                    return sorted(numbers)
+            else:
+                raise TypeError
+    except TypeError:
+        pass
+
 def factorial(n):
-    pass
+    counter = 1
+    if n < 0:
+        return ""
+    elif n == 0 or n == 1:
+        return counter
+    else:
+        for i in range(n, 1, -1):
+            counter *= i
+        return counter
 
 def fibonacci(n):
-    pass
+    if n == 0:
+        return None
+    if n == 1:
+        return 0
+    else:
+        list_of_fib = list()
+        a, b = 0, 1
+        for _ in range(n):
+            list_of_fib.append(a)
+            a, b = b, a + b
+        return list_of_fib[-1]
+
+
 
 def tower_of_hanoi(n, source, auxiliary, target):
 
@@ -52,10 +108,17 @@ def tower_of_hanoi(n, source, auxiliary, target):
 
 class Person:
     def __init__(self, name, age):
-        pass
+        self.name = name
+        self.age = age
 
 
 if __name__ == "__main__":
     # Placeholder functions for Python basics, to be implemented later
     #to test your functions, you can use the following code
-    print(add_numbers(3, 5)) #e.g
+    print(add_numbers(3, 5)) #e.g
+    print(factorial(0))
+    # print(sort_numbers([-3, -1, -2]))
+    print(fibonacci(5))
+    print(is_prime(3))
+    print(factorial(9))
+    print(read_file_lines("database.csv"))