Implement usethis version (#165)

README.md

@@ -1,5 +1,5 @@
 <h1 align="center">
-  <img src="doc/logo.svg"><br>
+  <img src="https://raw.githubusercontent.com/nathanjmcdougall/usethis-python/refs/heads/main/doc/logo.svg"><br>
 </h1>
 
 # usethis

pyproject.toml

@@ -70,6 +70,9 @@ source = "vcs"
 "Releases" = "https://github.com/nathanjmcdougall/usethis-python/releases"
 "Source Archive" = "https://github.com/nathanjmcdougall/usethis-python/archive/{commit_hash}.zip"
 
+[tool.hatch.build.hooks.vcs]
+version-file = "src/usethis/_version.py"
+
 [tool.ruff]
 line-length = 88
 
@@ -144,6 +147,7 @@ layers = [
 ]
 containers = [ "usethis" ]
 exhaustive = true
+exhaustive_ignores = [ "_version" ]
 
 [[tool.importlinter.contracts]]
 name = "Integrations Modular Design"

src/usethis/.gitignore

@@ -0,0 +1 @@
+_version.py

src/usethis/__main__.py

@@ -1,3 +1,5 @@
+import sys
+
 import typer
 
 import usethis._interface.badge
@@ -10,6 +12,11 @@
 from usethis._core.readme import add_readme
 from usethis._tool import PreCommitTool, RuffTool
 
+try:
+    from usethis._version import __version__
+except ImportError:
+    __version__ = None
+
 app = typer.Typer(
     help=(
         "Automate Python package and project setup tasks that are otherwise "
@@ -39,6 +46,14 @@ def readme(
                 add_pre_commit_badge()
 
 
+@app.command(help="Display the version of usethis.")
+def version() -> None:
+    if __version__ is not None:
+        print(__version__)
+    else:
+        sys.exit(1)
+
+
 app(prog_name="usethis")