Update and rename for_loops to for_loops_2

python/for_loops

@@ -1,31 +0,0 @@
-# FOR LOOPS
-
-# starts at 0, stops at 5-1
-for i in range(5):
-  print(i)
-
-print()  # print a blank line
-
-# iterate letters in a text string
-for letter in "dog":
-  print(letter)
-
-print()
-
-# loop starts with 5 and continues to 10-1
-for i in range(5, 10):
-  print (i**2)  # print i squared
-
-print()
-
-# start=10, end=20-1, step=3 
-# (every third number from 10 to 19)
-for i in range(10, 20, 3):
-  print(i)
-
-print()
-
-# loop iterates a list
-birds = ['robin', 'sparrow', 'duck']
-for i in birds:
-  print(len(i)) # print number of letters in each item

python/for_loops_2

@@ -0,0 +1,37 @@
+# FOR LOOPS
+
+# this for loop starts at 0, stops at 5-1
+for i in range(5):
+  print(i)
+
+print()  # print a blank line
+
+# iterate letters in a text string
+# first time through the loop the variable 'letter' is d, then o, then g
+# letter is just a variable name. we can change it to whatever we want
+for letter in "dog":
+  print(letter)
+
+print()
+
+# loop starts with 5 and continues to 10-1
+for i in range(5, 10):
+  print (i**2)  # print i squared
+
+print()
+
+# parameters for the range function: (start, stop-1, step)
+# in this loop, start=10, end=20-1, step=3 
+# (every third number from 10 to 19)
+for i in range(10, 20, 3):
+  print(i)
+
+print()
+
+# for loop iterates a list
+# here the list is a list of text strings, bird names
+# birds is our variable name for the list
+# i is our variable name for each bird in the list inside the for loop.
+birds = ['robin', 'sparrow', 'duck']
+for i in birds:
+  print(len(i))  # print number of letters in each item