Merge pull request #649 from realpython/python-strip

Add materials for python strip tutorial

Author: brendaweles

python-strip/README.md

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+# How to Strip Characters From a Python String
+
+This folder contains code snippets from the Real Python tutorial on [How to Strip Characters From a Python String](https://realpython.com/how-to-use-python-strip-remove-characters/).
+
+## License
+
+Distributed under the MIT license. See ``LICENSE`` for more information.

python-strip/all_whitespace.py

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+spacy_text = "    Hello   ,      World !    "
+print(spacy_text.strip())
+
+# Normalize whitespace
+words = spacy_text.split()
+print(" ".join(words))
+
+# Remove all whitespace
+print(spacy_text.replace(" ", ""))

python-strip/clean_data.py

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+data = ["  Alice ", " Bob  ", " Charlie\n", "\tDora"]
+cleaned_data = [name.strip() for name in data]
+print(cleaned_data)

python-strip/combine_methods.py

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+filename = "   Report_2025 FINAL.pdf  "
+
+# Correctly chained methods
+print(filename.strip().lower().replace(" ", "_"))
+
+# Incorrect order
+print(filename.lower().replace(" ", "_").strip())

python-strip/conditional_pipeline.py

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+user_input = input("Enter your input: ")
+
+if not user_input.strip():
+    print("Empty input detected!")
+else:
+    print(f"You entered: {user_input}")

python-strip/html.py

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+html_tag = "<p>premium content</p>"
+
+# Removes the set of the characters <, p, and >
+print(html_tag.strip("<p>"))
+
+# Removes prefix and suffix character sequences
+print(html_tag.removeprefix("<p>").removesuffix("</p>"))

python-strip/lstrip_rstrip.py

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+filename = "mp3audio.mp3"
+
+print(filename.lstrip("3pm"))
+print(filename.rstrip("3pm"))

python-strip/remove_prefix.py

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+filename = "txt_transcript.txt"
+
+print(filename.strip("txt_"))
+print(filename.removeprefix("txt_"))

python-strip/remove_suffix.py

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+from pathlib import Path
+
+filename = "txt_transcript.txt"
+
+# Incorrect: .strip() doesn't remove sequences
+print(filename.strip("txt_"))
+# Correct: Use .removesuffix() for this task
+print(filename.removesuffix(".txt"))
+
+# If the suffix isn't found, it returns the original string
+print(filename.removesuffix(".mp3"))
+
+# Better to use pathlib.Path for file operations
+print(Path(filename).stem)

python-strip/review.py

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+review_en = "!!This product is incredible!!!"
+print(review_en.strip("!"))
+
+review_es = "¡¡¡Este producto es increíble!!!"
+print(review_es.strip("¡!"))