diff --git a/Pipfile b/Pipfile
new file mode 100644
index 0000000..8229280
--- /dev/null
+++ b/Pipfile
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+[[source]]
+url = "https://pypi.org/simple"
+verify_ssl = true
+name = "pypi"
+
+[packages]
+pelican = "*"
+markdown = "*"
+datefinder = "*"
+typogrify = "*"
+ghp-import = "*"
+
+[dev-packages]
+
+[requires]
+python_version = "3.9"
diff --git a/content/code/2023-10-11-python-date-conversion.md b/content/code/2023-10-11-python-date-conversion.md
new file mode 100644
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+---
+title: Convert string to duration
+tags: python, conversion
+---
+
+I found myself wanting to convert a string to a duration (int), for some configuration.
+
+Something you can call like this:
+
+```python
+string_to_duration("1d", target="days") # returns 1
+string_to_duration("1d", target="hours") # returns 24
+string_to_duration("3m", target="hours") # returns 3 * 24 * 30
+```
+
+The code :
+
+```python
+from typing import Literal
+
+
+def string_to_duration(value: str, target: Literal["days", "hours"]):
+    """Convert a string to a number of hours, or days"""
+    num = int("".join(filter(str.isdigit, value)))
+
+    if target == "hours":
+        reconvert = True
+
+    if "h" in value:
+        if target == "days":
+            raise ValueError("Invalid duration value", value)
+        num = num
+        reconvert = False
+    elif "d" in value:
+        num = num
+    elif "w" in value:
+        num = num * 7
+    elif "m" in value:
+        num = num * 30
+    elif "y" in value:
+        num = num * 365
+    else:
+        raise ValueError("Invalid duration value", value)
+
+    if target == "hours" and reconvert:
+        num = num * 24
+
+    return num
+``````
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