feat: count_thresholds - Count the number of elements between certain thresholds

Author: DahlitzFlorian

ebook/chapters/standard_lib_chapters/non_categorized.tex

@@ -223,3 +223,17 @@ \subsection{Slicing Generators}
 Making use of the awesome \lstinline{itertools} module, you can!
 
 \lstinputlisting[caption=slice\_generators.py]{../standard_lib/slice_generators.py}
+
+
+\subsection{Count Elements Between Thresholds}
+
+If you want to get the number of elements between certain thresholds, you can make use of the following Listing.
+
+\lstinputlisting[caption=count\_thresholds.py]{../standard_lib/count_thresholds.py}
+
+The essential point is, that you can sum booleans as they are a subclass of integers.
+
+\begin{lstlisting}[caption=Output of count\_thresholds.py]
+$ python count_thresholds.py
+3
+\end{lstlisting}

ebook/python-snippets.epub

@@ -15,6 +15,7 @@ A collection of useful snippets using only the standard library.
 | capture_output | Capture the output of a function generally directing to stdout |
 | check_pattern | Check for multiple string patterns |
 | compare_strings | Use `difflib.SequenceMatcher` to compare strings |
+| count_thresholds | Count the number of elements between certain thresholds |
 | crazy_dict_expression | The craziest dictionary expression ever seen |
 | deprecated_decorator | Prints a DeprecationWarning when using a function/method marked as deprecated |
 | dict_based_on_lists | Create a dict based on two lists |

ebook/python-snippets.mobi

@@ -0,0 +1,5 @@
+data = [1, 2, 3, 4, 5, 6, 7]
+low, high = 3, 6
+result = sum(low <= x < high for x in data)
+
+print(result)