added reading.md

reading.md

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+
+## Arguments
+
+What are `*args` and `**kwargs`, where are they used, and why?
+
+## Reading Python 1
+
+Looking at the below code, write down the final values of A0, A1, ...An.
+
+```python
+A0 = dict(zip(('a','b','c','d','e'),(1,2,3,4,5)))
+A1 = range(10)
+A2 = sorted([i for i in A1 if i in A0])
+A3 = sorted([A0[s] for s in A0])
+A4 = [i for i in A1 if i in A3]
+A5 = {i:i*i for i in A1}
+A6 = [[i,i*i] for i in A1]
+```
+
+
+## Reading Python 2
+
+What does this code output:
+
+```python
+def f(x,l=[]):
+    for i in range(x):
+        l.append(i*i)
+    print(l) 
+
+f(2)
+f(3,[3,2,1])
+f(3)
+```