diff --git a/Notes/01_Introduction/01_Python.md b/Notes/01_Introduction/01_Python.md
index 991196c..c992f5a 100644
--- a/Notes/01_Introduction/01_Python.md
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@@ -183,4 +183,4 @@ exercise work. For example:
 >>>
 ```
 
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diff --git a/Notes/01_Introduction/02_Hello_world.md b/Notes/01_Introduction/02_Hello_world.md
index 80c2723..5b793ae 100644
--- a/Notes/01_Introduction/02_Hello_world.md
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@@ -503,4 +503,4 @@ an identifying filename and line number.
 * Fix the error
 * Run the program successfully
 
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diff --git a/Notes/01_Introduction/03_Numbers.md b/Notes/01_Introduction/03_Numbers.md
index fb99e18..2ea4ef9 100644
--- a/Notes/01_Introduction/03_Numbers.md
+++ b/Notes/01_Introduction/03_Numbers.md
@@ -232,4 +232,4 @@ Months 309
 
 While you’re at it, fix the program to correct the for overpayment that occurs in the last month.
 
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diff --git a/Notes/01_Introduction/04_Strings.md b/Notes/01_Introduction/04_Strings.md
index 0a7c8c9..836d6a8 100644
--- a/Notes/01_Introduction/04_Strings.md
+++ b/Notes/01_Introduction/04_Strings.md
@@ -420,4 +420,4 @@ For example, a popular alternative to Python's normal interactive mode
 is IPython (http://ipython.org).  IPython provides some nice features
 such as tab-completion of method names, more integrated help and more.
 
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diff --git a/Notes/01_Introduction/05_Lists.md b/Notes/01_Introduction/05_Lists.md
index e056c9e..076a416 100644
--- a/Notes/01_Introduction/05_Lists.md
+++ b/Notes/01_Introduction/05_Lists.md
@@ -402,4 +402,4 @@ example, a list that consists entirely of numbers or a list of text
 strings.  Mixing different kinds of data together in the same list is
 often a good way to make your head explode so it's best avoided.
 
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diff --git a/Notes/01_Introduction/06_Files.md b/Notes/01_Introduction/06_Files.md
index 7669e94..0d353ae 100644
--- a/Notes/01_Introduction/06_Files.md
+++ b/Notes/01_Introduction/06_Files.md
@@ -214,4 +214,4 @@ Try it:
 >>>
 ```
 
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