Through exercise 7, excepting my billion dots.

.gitignore

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+out.txt

2/ex6.py

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+x = "There are %d types of people." % 10 # Create a variable that is a string with a variable of %d which is equal to 10.
+binary = "binary" # Create variable that is a string.
+do_not = "don't"  # Create variable that is a string.
+y = "Those who know %s and those who %s." % (binary, do_not) # %s and %s correspond to binary and do_not
+
+print x # Print variable x
+print y # Print variable y
+
+print "I also said: %r." % x #2: First # Print a string with a variable.
+print "I also said: '%s'." % y #2: Second and third # Print a string with the string variable y
+
+hilarious = False # Set variable hilarious to False
+joke_evaluation = "Isn't that joke so funny?! %r" #2: Fourth # Set a variable to a string with a variable yet to be referenced.
+
+print joke_evaluation % hilarious # print a variable and another variable (referring back to %r)
+
+w = "This is the left side of..." # A string corresponding to the left side of a bigger string.
+e = "a string with a right side." # A string corresponding to the right side of a bigger string.
+
+print w + e # Add the strings together.
+
+#1. Done.
+#2. Done
+#3. You called y (2 strings in a string) and x (1 string in a string) and you called joke_evaluation (line 13 & 15) which has another string in a string for a total of 4self.
+#4. 

ex7.py

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+print("Mary had a little lamb.") # Print string
+print("Its fleece was white as {}.".format('snow')) # Print string with format.
+print("And everywhere that Mary went.") # Print string.
+
+with open('out.txt', 'w') as f:
+    print("." * 1000000000, file=f)  # A little fun with a billion dots.
+
+end1 = "C" # Set variable to a string.
+end2 = "h" # Set variable to a string.
+end3 = "e" # Set variable to a string.
+end4 = "e" # Set variable to a string.
+end5 = "s" # Set variable to a string.
+end6 = "e" # Set variable to a string.
+end7 = "B" # Set variable to a string.
+end8 = "u" # Set variable to a string.
+end9 = "r" # Set variable to a string.
+end10 = "g" # Set variable to a string.
+end11 = "e" # Set variable to a string.
+end12 = "r" # Set variable to a string.
+
+
+# watch end = ' ' at the end. try removing it to see what happens.
+print(end1 + end2 + end3 + end4 + end5 + end6, end=' ') # Print combined variables without a space in between on the same line as the next set of them with a space in between:
+print(end7 + end8 + end9 + end10 + end11 + end12) # Print variables without spaces in between
+
+#1. Done
+#2. Done
+
+# Break it.