Propagate improved support for google colab.

zivy · Masood-Akram · zivy · commit a4eb9ca63307 · 2026-02-03T15:51:14.000-05:00
Propagate the changes proposed by Masood-Akram in
previous commit. More robust runtime environment identification,
are we on colab or not. Also more efficient shallow repository
cloning.

Co-authored-by: Masood-Akram &lt;masoodakram@mednet.ucla.edu&gt;
diff --git a/Python/02_Pythonic_Image.ipynb b/Python/02_Pythonic_Image.ipynb
@@ -23,12 +23,19 @@
    "outputs": [],
    "source": [
     "# Setup to enable running the notebook in the Google Colab environment\n",
-    "import os\n",
     "\n",
-    "if \"COLAB_NOTEBOOK_ID\" in os.environ:\n",
-    "    !git clone https://github.com/InsightSoftwareConsortium/SimpleITK-Notebooks\n",
+    "try:\n",
+    "    import google.colab\n",
+    "    import pathlib\n",
+    "\n",
+    "    repo_dir = pathlib.Path(\"SimpleITK-Notebooks\")\n",
+    "    if not repo_dir.exists():\n",
+    "        !git clone --depth 1 https://github.com/InsightSoftwareConsortium/SimpleITK-Notebooks\n",
     "    %cd SimpleITK-Notebooks/Python\n",
-    "    !pip install -q -r requirements.txt"
+    "    !pip install -q -r requirements.txt\n",
+    "\n",
+    "except ImportError:\n",
+    "    pass  # not on Colab"
    ]
   },
   {
diff --git a/Python/03_Image_Details.ipynb b/Python/03_Image_Details.ipynb
@@ -23,12 +23,19 @@
    "outputs": [],
    "source": [
     "# Setup to enable running the notebook in the Google Colab environment\n",
-    "import os\n",
     "\n",
-    "if \"COLAB_NOTEBOOK_ID\" in os.environ:\n",
-    "    !git clone https://github.com/InsightSoftwareConsortium/SimpleITK-Notebooks\n",
+    "try:\n",
+    "    import google.colab\n",
+    "    import pathlib\n",
+    "\n",
+    "    repo_dir = pathlib.Path(\"SimpleITK-Notebooks\")\n",
+    "    if not repo_dir.exists():\n",
+    "        !git clone --depth 1 https://github.com/InsightSoftwareConsortium/SimpleITK-Notebooks\n",
     "    %cd SimpleITK-Notebooks/Python\n",
-    "    !pip install -q -r requirements.txt"
+    "    !pip install -q -r requirements.txt\n",
+    "\n",
+    "except ImportError:\n",
+    "    pass  # not on Colab"
    ]
   },
   {
diff --git a/Python/04_Image_Display.ipynb b/Python/04_Image_Display.ipynb
@@ -23,12 +23,19 @@
    "outputs": [],
    "source": [
     "# Setup to enable running the notebook in the Google Colab environment\n",
-    "import os\n",
     "\n",
-    "if \"COLAB_NOTEBOOK_ID\" in os.environ:\n",
-    "    !git clone https://github.com/InsightSoftwareConsortium/SimpleITK-Notebooks\n",
+    "try:\n",
+    "    import google.colab\n",
+    "    import pathlib\n",
+    "\n",
+    "    repo_dir = pathlib.Path(\"SimpleITK-Notebooks\")\n",
+    "    if not repo_dir.exists():\n",
+    "        !git clone --depth 1 https://github.com/InsightSoftwareConsortium/SimpleITK-Notebooks\n",
     "    %cd SimpleITK-Notebooks/Python\n",
-    "    !pip install -q -r requirements.txt"
+    "    !pip install -q -r requirements.txt\n",
+    "\n",
+    "except ImportError:\n",
+    "    pass  # not on Colab"
    ]
   },
   {
diff --git a/Python/05_Results_Visualization.ipynb b/Python/05_Results_Visualization.ipynb
@@ -23,12 +23,19 @@
    "outputs": [],
    "source": [
     "# Setup to enable running the notebook in the Google Colab environment\n",
-    "import os\n",
     "\n",
-    "if \"COLAB_NOTEBOOK_ID\" in os.environ:\n",
-    "    !git clone https://github.com/InsightSoftwareConsortium/SimpleITK-Notebooks\n",
+    "try:\n",
+    "    import google.colab\n",
+    "    import pathlib\n",
+    "\n",
+    "    repo_dir = pathlib.Path(\"SimpleITK-Notebooks\")\n",
+    "    if not repo_dir.exists():\n",
+    "        !git clone --depth 1 https://github.com/InsightSoftwareConsortium/SimpleITK-Notebooks\n",
     "    %cd SimpleITK-Notebooks/Python\n",
-    "    !pip install -q -r requirements.txt"
+    "    !pip install -q -r requirements.txt\n",
+    "\n",
+    "except ImportError:\n",
+    "    pass  # not on Colab"
    ]
   },
   {
diff --git a/Python/10_matplotlibs_imshow.ipynb b/Python/10_matplotlibs_imshow.ipynb
@@ -23,12 +23,19 @@
    "outputs": [],
    "source": [
     "# Setup to enable running the notebook in the Google Colab environment\n",
-    "import os\n",
     "\n",
-    "if \"COLAB_NOTEBOOK_ID\" in os.environ:\n",
-    "    !git clone https://github.com/InsightSoftwareConsortium/SimpleITK-Notebooks\n",
+    "try:\n",
+    "    import google.colab\n",
+    "    import pathlib\n",
+    "\n",
+    "    repo_dir = pathlib.Path(\"SimpleITK-Notebooks\")\n",
+    "    if not repo_dir.exists():\n",
+    "        !git clone --depth 1 https://github.com/InsightSoftwareConsortium/SimpleITK-Notebooks\n",
     "    %cd SimpleITK-Notebooks/Python\n",
-    "    !pip install -q -r requirements.txt"
+    "    !pip install -q -r requirements.txt\n",
+    "\n",
+    "except ImportError:\n",
+    "    pass  # not on Colab"
    ]
   },
   {
diff --git a/Python/11_Progress.ipynb b/Python/11_Progress.ipynb
@@ -23,12 +23,19 @@
    "outputs": [],
    "source": [
     "# Setup to enable running the notebook in the Google Colab environment\n",
-    "import os\n",
     "\n",
-    "if \"COLAB_NOTEBOOK_ID\" in os.environ:\n",
-    "    !git clone https://github.com/InsightSoftwareConsortium/SimpleITK-Notebooks\n",
+    "try:\n",
+    "    import google.colab\n",
+    "    import pathlib\n",
+    "\n",
+    "    repo_dir = pathlib.Path(\"SimpleITK-Notebooks\")\n",
+    "    if not repo_dir.exists():\n",
+    "        !git clone --depth 1 https://github.com/InsightSoftwareConsortium/SimpleITK-Notebooks\n",
     "    %cd SimpleITK-Notebooks/Python\n",
-    "    !pip install -q -r requirements.txt"
+    "    !pip install -q -r requirements.txt\n",
+    "\n",
+    "except ImportError:\n",
+    "    pass  # not on Colab"
    ]
   },
   {
diff --git a/Python/20_Expand_With_Interpolators.ipynb b/Python/20_Expand_With_Interpolators.ipynb
@@ -23,12 +23,19 @@
    "outputs": [],
    "source": [
     "# Setup to enable running the notebook in the Google Colab environment\n",
-    "import os\n",
     "\n",
-    "if \"COLAB_NOTEBOOK_ID\" in os.environ:\n",
-    "    !git clone https://github.com/InsightSoftwareConsortium/SimpleITK-Notebooks\n",
+    "try:\n",
+    "    import google.colab\n",
+    "    import pathlib\n",
+    "\n",
+    "    repo_dir = pathlib.Path(\"SimpleITK-Notebooks\")\n",
+    "    if not repo_dir.exists():\n",
+    "        !git clone --depth 1 https://github.com/InsightSoftwareConsortium/SimpleITK-Notebooks\n",
     "    %cd SimpleITK-Notebooks/Python\n",
-    "    !pip install -q -r requirements.txt"
+    "    !pip install -q -r requirements.txt\n",
+    "\n",
+    "except ImportError:\n",
+    "    pass  # not on Colab"
    ]
   },
   {
diff --git a/Python/21_Transforms_and_Resampling.ipynb b/Python/21_Transforms_and_Resampling.ipynb
@@ -23,12 +23,19 @@
    "outputs": [],
    "source": [
     "# Setup to enable running the notebook in the Google Colab environment\n",
-    "import os\n",
     "\n",
-    "if \"COLAB_NOTEBOOK_ID\" in os.environ:\n",
-    "    !git clone https://github.com/InsightSoftwareConsortium/SimpleITK-Notebooks\n",
+    "try:\n",
+    "    import google.colab\n",
+    "    import pathlib\n",
+    "\n",
+    "    repo_dir = pathlib.Path(\"SimpleITK-Notebooks\")\n",
+    "    if not repo_dir.exists():\n",
+    "        !git clone --depth 1 https://github.com/InsightSoftwareConsortium/SimpleITK-Notebooks\n",
     "    %cd SimpleITK-Notebooks/Python\n",
-    "    !pip install -q -r requirements.txt"
+    "    !pip install -q -r requirements.txt\n",
+    "\n",
+    "except ImportError:\n",
+    "    pass  # not on Colab"
    ]
   },
   {
diff --git a/Python/22_Transforms.ipynb b/Python/22_Transforms.ipynb
@@ -23,12 +23,19 @@
    "outputs": [],
    "source": [
     "# Setup to enable running the notebook in the Google Colab environment\n",
-    "import os\n",
     "\n",
-    "if \"COLAB_NOTEBOOK_ID\" in os.environ:\n",
-    "    !git clone https://github.com/InsightSoftwareConsortium/SimpleITK-Notebooks\n",
+    "try:\n",
+    "    import google.colab\n",
+    "    import pathlib\n",
+    "\n",
+    "    repo_dir = pathlib.Path(\"SimpleITK-Notebooks\")\n",
+    "    if not repo_dir.exists():\n",
+    "        !git clone --depth 1 https://github.com/InsightSoftwareConsortium/SimpleITK-Notebooks\n",
     "    %cd SimpleITK-Notebooks/Python\n",
-    "    !pip install -q -r requirements.txt"
+    "    !pip install -q -r requirements.txt\n",
+    "\n",
+    "except ImportError:\n",
+    "    pass  # not on Colab"
    ]
   },
   {
diff --git a/Python/300_Segmentation_Overview.ipynb b/Python/300_Segmentation_Overview.ipynb
@@ -23,12 +23,19 @@
    "outputs": [],
    "source": [
     "# Setup to enable running the notebook in the Google Colab environment\n",
-    "import os\n",
     "\n",
-    "if \"COLAB_NOTEBOOK_ID\" in os.environ:\n",
-    "    !git clone https://github.com/InsightSoftwareConsortium/SimpleITK-Notebooks\n",
+    "try:\n",
+    "    import google.colab\n",
+    "    import pathlib\n",
+    "\n",
+    "    repo_dir = pathlib.Path(\"SimpleITK-Notebooks\")\n",
+    "    if not repo_dir.exists():\n",
+    "        !git clone --depth 1 https://github.com/InsightSoftwareConsortium/SimpleITK-Notebooks\n",
     "    %cd SimpleITK-Notebooks/Python\n",
-    "    !pip install -q -r requirements.txt"
+    "    !pip install -q -r requirements.txt\n",
+    "\n",
+    "except ImportError:\n",
+    "    pass  # not on Colab"
    ]
   },
   {
diff --git a/Python/30_Segmentation_Region_Growing.ipynb b/Python/30_Segmentation_Region_Growing.ipynb
@@ -23,12 +23,19 @@
    "outputs": [],
    "source": [
     "# Setup to enable running the notebook in the Google Colab environment\n",
-    "import os\n",
     "\n",
-    "if \"COLAB_NOTEBOOK_ID\" in os.environ:\n",
-    "    !git clone https://github.com/InsightSoftwareConsortium/SimpleITK-Notebooks\n",
+    "try:\n",
+    "    import google.colab\n",
+    "    import pathlib\n",
+    "\n",
+    "    repo_dir = pathlib.Path(\"SimpleITK-Notebooks\")\n",
+    "    if not repo_dir.exists():\n",
+    "        !git clone --depth 1 https://github.com/InsightSoftwareConsortium/SimpleITK-Notebooks\n",
     "    %cd SimpleITK-Notebooks/Python\n",
-    "    !pip install -q -r requirements.txt"
+    "    !pip install -q -r requirements.txt\n",
+    "\n",
+    "except ImportError:\n",
+    "    pass  # not on Colab"
    ]
   },
   {
diff --git a/Python/31_Levelset_Segmentation.ipynb b/Python/31_Levelset_Segmentation.ipynb
@@ -23,12 +23,19 @@
    "outputs": [],
    "source": [
     "# Setup to enable running the notebook in the Google Colab environment\n",
-    "import os\n",
     "\n",
-    "if \"COLAB_NOTEBOOK_ID\" in os.environ:\n",
-    "    !git clone https://github.com/InsightSoftwareConsortium/SimpleITK-Notebooks\n",
+    "try:\n",
+    "    import google.colab\n",
+    "    import pathlib\n",
+    "\n",
+    "    repo_dir = pathlib.Path(\"SimpleITK-Notebooks\")\n",
+    "    if not repo_dir.exists():\n",
+    "        !git clone --depth 1 https://github.com/InsightSoftwareConsortium/SimpleITK-Notebooks\n",
     "    %cd SimpleITK-Notebooks/Python\n",
-    "    !pip install -q -r requirements.txt"
+    "    !pip install -q -r requirements.txt\n",
+    "\n",
+    "except ImportError:\n",
+    "    pass  # not on Colab"
    ]
   },
   {
diff --git a/Python/32_Watersheds_Segmentation.ipynb b/Python/32_Watersheds_Segmentation.ipynb
@@ -23,12 +23,19 @@
    "outputs": [],
    "source": [
     "# Setup to enable running the notebook in the Google Colab environment\n",
-    "import os\n",
     "\n",
-    "if \"COLAB_NOTEBOOK_ID\" in os.environ:\n",
-    "    !git clone https://github.com/InsightSoftwareConsortium/SimpleITK-Notebooks\n",
+    "try:\n",
+    "    import google.colab\n",
+    "    import pathlib\n",
+    "\n",
+    "    repo_dir = pathlib.Path(\"SimpleITK-Notebooks\")\n",
+    "    if not repo_dir.exists():\n",
+    "        !git clone --depth 1 https://github.com/InsightSoftwareConsortium/SimpleITK-Notebooks\n",
     "    %cd SimpleITK-Notebooks/Python\n",
-    "    !pip install -q -r requirements.txt"
+    "    !pip install -q -r requirements.txt\n",
+    "\n",
+    "except ImportError:\n",
+    "    pass  # not on Colab"
    ]
   },
   {
diff --git a/Python/33_Segmentation_Thresholding_Edge_Detection.ipynb b/Python/33_Segmentation_Thresholding_Edge_Detection.ipynb
@@ -23,12 +23,19 @@
    "outputs": [],
    "source": [
     "# Setup to enable running the notebook in the Google Colab environment\n",
-    "import os\n",
     "\n",
-    "if \"COLAB_NOTEBOOK_ID\" in os.environ:\n",
-    "    !git clone https://github.com/InsightSoftwareConsortium/SimpleITK-Notebooks\n",
+    "try:\n",
+    "    import google.colab\n",
+    "    import pathlib\n",
+    "\n",
+    "    repo_dir = pathlib.Path(\"SimpleITK-Notebooks\")\n",
+    "    if not repo_dir.exists():\n",
+    "        !git clone --depth 1 https://github.com/InsightSoftwareConsortium/SimpleITK-Notebooks\n",
     "    %cd SimpleITK-Notebooks/Python\n",
-    "    !pip install -q -r requirements.txt"
+    "    !pip install -q -r requirements.txt\n",
+    "\n",
+    "except ImportError:\n",
+    "    pass  # not on Colab"
    ]
   },
   {
diff --git a/Python/34_Segmentation_Evaluation.ipynb b/Python/34_Segmentation_Evaluation.ipynb
@@ -23,12 +23,19 @@
    "outputs": [],
    "source": [
     "# Setup to enable running the notebook in the Google Colab environment\n",
-    "import os\n",
     "\n",
-    "if \"COLAB_NOTEBOOK_ID\" in os.environ:\n",
-    "    !git clone https://github.com/InsightSoftwareConsortium/SimpleITK-Notebooks\n",
+    "try:\n",
+    "    import google.colab\n",
+    "    import pathlib\n",
+    "\n",
+    "    repo_dir = pathlib.Path(\"SimpleITK-Notebooks\")\n",
+    "    if not repo_dir.exists():\n",
+    "        !git clone --depth 1 https://github.com/InsightSoftwareConsortium/SimpleITK-Notebooks\n",
     "    %cd SimpleITK-Notebooks/Python\n",
-    "    !pip install -q -r requirements.txt"
+    "    !pip install -q -r requirements.txt\n",
+    "\n",
+    "except ImportError:\n",
+    "    pass  # not on Colab"
    ]
   },
   {
diff --git a/Python/60_Registration_Introduction.ipynb b/Python/60_Registration_Introduction.ipynb
@@ -23,12 +23,19 @@
    "outputs": [],
    "source": [
     "# Setup to enable running the notebook in the Google Colab environment\n",
-    "import os\n",
     "\n",
-    "if \"COLAB_NOTEBOOK_ID\" in os.environ:\n",
-    "    !git clone https://github.com/InsightSoftwareConsortium/SimpleITK-Notebooks\n",
+    "try:\n",
+    "    import google.colab\n",
+    "    import pathlib\n",
+    "\n",
+    "    repo_dir = pathlib.Path(\"SimpleITK-Notebooks\")\n",
+    "    if not repo_dir.exists():\n",
+    "        !git clone --depth 1 https://github.com/InsightSoftwareConsortium/SimpleITK-Notebooks\n",
     "    %cd SimpleITK-Notebooks/Python\n",
-    "    !pip install -q -r requirements.txt"
+    "    !pip install -q -r requirements.txt\n",
+    "\n",
+    "except ImportError:\n",
+    "    pass  # not on Colab"
    ]
   },
   {
diff --git a/Python/62_Registration_Tuning.ipynb b/Python/62_Registration_Tuning.ipynb
diff --git a/Python/64_Registration_Memory_Time_Tradeoff.ipynb b/Python/64_Registration_Memory_Time_Tradeoff.ipynb
diff --git a/Python/67_Registration_Semiautomatic_Homework.ipynb b/Python/67_Registration_Semiautomatic_Homework.ipynb
diff --git a/Python/68_Registration_Errors.ipynb b/Python/68_Registration_Errors.ipynb
diff --git a/Python/69_x-ray-panorama.ipynb b/Python/69_x-ray-panorama.ipynb
diff --git a/Python/70_Data_Augmentation.ipynb b/Python/70_Data_Augmentation.ipynb
