Add completed str formatting lab

students/FyfyNguyen/session03/strformat_lab.py

@@ -0,0 +1,54 @@
+#!/usr/bin/env python3
+
+"""
+String formatting lab
+"""
+
+# Task One 
+print("file_{:03d}: {:.2f}, {:.2e}, {:.3e}".format(
+        2, 123.4567, 10000, 12345.67))
+
+# Task Two
+tup = 2, 123.4567, 10000, 12345.67
+
+# old style
+print("file_00%d: %.2f, %.2e, %.3e" % (tup[0], tup[1], tup[2], tup[3]))
+
+# f-string
+print(f"file_{tup[0]:03d}: {tup[1]:.2f}, {tup[2]:.2e}, {tup[3]:.3e}")
+
+
+# Task Three
+# Format arbitrary object just using {}
+# Multiply a list by length of the sequence to get number of "{}" needed
+# Use str.join() method to join seq separated by commas
+def formatter(seq):
+    seq_len = len(seq)
+    string = ("the {} numbers are: " + ", ".join(["{}"]*seq_len)).format(
+            seq_len, *seq)
+    return string.format(*seq)
+
+# Task Four
+print(formatter((4, 30, 2017, 2, 27)))
+
+num = (4, 30, 2017, 2, 27)
+print("{:02d} {} {} {:02d} {}".format(num[3], num[4], num[2], num[0], num[1]))
+
+# Task Five
+fruit = ['oranges', 1.3, 'lemons', 1.1]
+print(f"The weight of an {fruit[0][0:-1]} is {fruit[1]} and the weight of a {
+        fruit[2][0:-1]} is {fruit[3]}")
+
+print(f"The weight of an {fruit[0][0:-1].upper()} is {fruit[1] * 1.2} and the "
+      "weight of a {fruit[2][0:-1].upper()} is {fruit[3] * 1.2}")
+
+# Task Six
+data = [("Beyonce", 37, 355.00),
+        ("Jay-Z", 48, 810.00),
+        ("Blue Ivy", 6, 1, 165.00)
+        ]
+
+print("{:20s} | {:5s} | {:8s}".format("Name", "Age", "Price"))
+print("-" * 42)
+for item in data:
+    print("{:20s}   {:5d}   $ {:8,.2f}".format(*item))