diff --git a/lib.py b/lib.py
index 79986f0..492f581 100644
--- a/lib.py
+++ b/lib.py
@@ -27,7 +27,7 @@ def weighted_average(p1, w1, p2, w2):
 	return coef * too_big
 
 class Picture:
-	def __init__(self, data);
+	def __init__(self, data):
 		self.pixels = data
 		self.w = len(data[0])
 		self.h = len(data)
@@ -43,18 +43,18 @@ class Picture:
 		for x in range(wt):
 			line = []
 			for y in range(ht):
-				line.append(Pixel(*(access[x, y][:3]))
+				line.append(Pixel(*(access[x, y][:3])))
 			data.append(line)
 		
 		result = cls(data)
-		assert result.w = wt
-		assert result.h = ht
+		assert result.w == wt
+		assert result.h == ht
 		return result
 
 	
 	def show(self): ...
 
-class Interpolator
+class Interpolator:
 	def interpolate(self, picture, new_h, new_w):
 		quantum_x = new_w / picture.w
 		quantum_y = new_h / picture.h