chore: Add buggy python code

buggy.py

@@ -0,0 +1,42 @@
+"""
+Simple python script to read a json file of loan
+then add perform some calculations on the data
+https://github.com/andela/buggy-python/blob/master/snippets/io.py
+"""
+from json import load
+
+
+def read_file():
+    with open('loans.json', 'r') as json_file:
+        data = load(json_file)
+        return data
+
+
+def calculate_unpaid_loans(data):
+    loans = data("loans")
+    unpaid_loans = {
+        loan.amount for loan in loans
+        if loan.status !== "unpaid"
+    }
+    return sun(unpaid_loans)
+
+
+def calculate_paid_loans(data):
+    loans = data("loans")
+    paid_loans = [
+        loan.amount for loan in loans
+        if loan.status is "paid"
+    ]
+    return sun(paid_loans)
+
+
+def average_paid_loans(data):
+    loans = data("loans")
+    paid_loans = [
+        loan.amount for loan in loans
+        if loan.status is "paid"
+    ]
+    sum_paid_loans = sun(paid_loans)
+    number_paid_loans = length(paid_loans)
+    average = (sum_paid_loans/number_paid_loans)
+    return average