Add old exercise from 2023.8.21

Author: Ray7788

long_rivers.py

@@ -0,0 +1,28 @@
+rivers = [
+    {"name": "Nile", "length": 4157},
+    {"name": "Yangtze", "length": 3434},
+    {"name": "Murray-Darling", "length": 2310},
+    {"name": "Volga", "length": 2290},
+    {"name": "Mississippi", "length": 2540},
+    {"name": "Amazon", "length": 3915}
+]
+
+# 1. In a for loop, print out each river's name!
+for i in rivers:
+    print(i["name"])
+total_length = 0
+
+# 2. In another for loop, add up and print out the total length of all the rivers!
+for i in rivers:
+    total_length += i["length"]
+print(total_length)
+
+# 1. Print out every river's name that begins with the letter M !
+for i in rivers:
+    if i["name"][0] == "M":
+        print(i["name"])
+
+# 2. The length of the rivers are in miles. Print out every river's length in kilometres! (1 mile is
+# roughly 1.6 km)
+for i in rivers:
+    print(i["length"]*1.6)