Added basic implementation for string and path manipulation in python

_includes/string_concat/creating_log_messages.py

@@ -1 +1,13 @@
-# TODO
+# creating log messages
+
+image_index = 11
+num_images = 100
+
+# strings can be added together with the '+' operator
+print("Analyzing image " + str(image_index) + "/" + str(num_images) + "...")
+
+# An alternative way to combine strings and variables from your code
+# are so called f-strings: in f-strings you can add variables (and some
+# code) in between curly braces. Types are automatically coerced to strings.
+#  The below code achieves the same output.
+print(f"Analysing image {image_index}/{num_images}...")

_includes/string_concat/manipulating_file_paths.py

@@ -1 +1,14 @@
-# TODO
+# manipulating file paths
+
+import pathlib
+import tempfile
+
+# Temporary folder is different on different operating systems.
+# We use tempfile.gettempdir() from the standard library as it has all that logic.
+tmp_folder = pathlib.Path(tempfile.gettempdir())
+file_name = "nuclei.tif"
+
+# pathlib.Path objects support "syntactic sugar", like using '/' as a
+# separator when composing paths.
+path = tmp_folder / file_name
+print(path)