diff --git a/syft/tensor.py b/syft/tensor.py
index 6d1ce8dc30..7d549da9bb 100644
--- a/syft/tensor.py
+++ b/syft/tensor.py
@@ -8,7 +8,7 @@ def _ensure_ndarray(arr):
 
 class TensorBase(object):
     """
-    A base tensor class that perform basic element-wise operation such as 
+    A base tensor class that perform basic element-wise operation such as
     addition, subtraction, multiplication and division
     """
 
@@ -83,3 +83,20 @@ class TensorBase(object):
         arr_like = _ensure_ndarray(arr_like)
         self.data = self.data / arr_like
         return self.data
+
+    def shape(self):
+        """Returns a tuple of input array dimensions."""
+        if self.encrypted:
+            return NotImplemented
+
+        return self.data.shape
+
+    def sum(self, dim=None):
+        """Returns the sum of all elements in the input array."""
+        if self.encrypted:
+            return NotImplemented
+
+        if dim is None:
+            return self.data.sum()
+        else:
+            return self.data.sum(axis=dim)

Implement Default sum Functionality for Base Tensor Type
**User Story A:** As a Data Scientist using Syft's Base Tensor type, I want to leverage a default method for computing operations on a Tensor of arbitrary type. For this ticket to be complete, sum() should return a new tensor. For a reference on the operation this performs check out [PyTorch](http://pytorch.org/docs/master/tensors.html)'s documentation.

**Acceptance Criteria:**
- If the Base Tensor type's attribute "encrypted" is set to True, it should return a NotImplemented error.
- a unit test demonstrating the correct operation on the Base Tensor type implemented over int and float Tensors.
- inline documentation in the python code. For inspiration on inline documentation, please check out [PyTorch](http://pytorch.org/docs/master/tensors.html)'s documentation for this operator.
diff --git a/tests/test_tensor.py b/tests/test_tensor.py
index ae9cb22b63..8222b8250d 100644
--- a/tests/test_tensor.py
+++ b/tests/test_tensor.py
@@ -7,7 +7,7 @@ class AddTests(unittest.TestCase):
     def testSimple(self):
         t = TensorBase(np.array([1,2,3]))
         self.assertTrue(np.array_equal(t + np.array([1,2,3]), [2,4,6]))
-    
+
     def testInplace(self):
         t = TensorBase(np.array([1,2,3]))
         t += np.array([1,2,3])
@@ -21,7 +21,7 @@ class SubTests(unittest.TestCase):
     def testSimple(self):
         t = TensorBase(np.array([1,2,3]))
         self.assertTrue(np.array_equal(t - np.array([1,2,3]), [0,0,0]))
-    
+
     def testInplace(self):
         t = TensorBase(np.array([1,2,3]))
         t -= np.array([1,2,3])
@@ -58,9 +58,23 @@ class DivTests(unittest.TestCase):
     def testScalar(self):
         t = TensorBase(np.array([2,4,6]))
         self.assertTrue(np.array_equal(t / 2, [1, 2, 3]))
-    
+
+class ShapeTests(unittest.TestCase):
+    def testShape(self):
+        t = TensorBase(np.array([[0, 1], [0, 5]]))
+        self.assertTrue(np.array_equal(t.shape(), (2, 2)))
+
+class SumTests(unittest.TestCase):
+    def testDimNoneInt(self):
+        t = TensorBase(np.array([1,2,3]))
+        self.assertTrue(np.array_equal(t.sum(), 6))
+
+    def testDimIsNotNoneInt(self):
+        t = TensorBase(np.array([[0, 1], [0, 5]]))
+        self.assertTrue(np.array_equal(t.sum(dim=1), [1, 5]))
+
 def main():
     unittest.main()
 
 if __name__ == '__main__':
-    main()
\ No newline at end of file
+    main()

pip install -e .
parse_log_pytest
requirements.txt
pytest
apt-get update apt-get install -y gcc
3.9
requirements.txt
pytest --no-header -rA --tb=line --color=no -p no:cacheprovider -W ignore::DeprecationWarning
anyio==4.9.0
argon2-cffi==23.1.0
argon2-cffi-bindings==21.2.0
args==0.1.0
arrow==1.3.0
asttokens==3.0.0
async-lru==2.0.5
attrs==25.3.0
babel==2.17.0
beautifulsoup4==4.13.3
bleach==6.2.0
certifi==2025.1.31
cffi==1.17.1
charset-normalizer==3.4.1
clint==0.5.1
comm==0.2.2
debugpy==1.8.13
decorator==5.2.1
defusedxml==0.7.1
exceptiongroup==1.2.2
executing==2.2.0
fastjsonschema==2.21.1
fqdn==1.5.1
h11==0.14.0
httpcore==1.0.7
httpx==0.28.1
idna==3.10
importlib_metadata==8.6.1
iniconfig==2.1.0
ipykernel==6.29.5
ipython==8.18.1
ipywidgets==8.1.5
isoduration==20.11.0
jedi==0.19.2
Jinja2==3.1.6
json5==0.10.0
jsonpointer==3.0.0
jsonschema==4.23.0
jsonschema-specifications==2024.10.1
jupyter==1.1.1
jupyter-console==6.6.3
jupyter-events==0.12.0
jupyter-lsp==2.2.5
jupyter_client==8.6.3
jupyter_core==5.7.2
jupyter_server==2.15.0
jupyter_server_terminals==0.5.3
jupyterlab==4.3.6
jupyterlab_pygments==0.3.0
jupyterlab_server==2.27.3
jupyterlab_widgets==3.0.13
line_profiler==4.2.0
MarkupSafe==3.0.2
matplotlib-inline==0.1.7
mistune==3.1.3
nbclient==0.10.2
nbconvert==7.16.6
nbformat==5.10.4
nest-asyncio==1.6.0
notebook==7.3.3
notebook_shim==0.2.4
numpy==1.26.4
overrides==7.7.0
packaging==24.2
pandocfilters==1.5.1
parso==0.8.4
pexpect==4.9.0
phe==1.5.0
platformdirs==4.3.7
pluggy==1.5.0
prometheus_client==0.21.1
prompt_toolkit==3.0.50
psutil==7.0.0
ptyprocess==0.7.0
pure_eval==0.2.3
pycparser==2.22
Pygments==2.19.1
pyRserve==1.0.4
pytest==8.3.5
python-dateutil==2.9.0.post0
python-json-logger==3.3.0
PyYAML==6.0.2
pyzmq==26.3.0
referencing==0.36.2
requests==2.32.3
rfc3339-validator==0.1.4
rfc3986-validator==0.1.1
rpds-py==0.24.0
Send2Trash==1.8.3
six==1.17.0
sniffio==1.3.1
soupsieve==2.6
stack-data==0.6.3
-e git+https://github.com/OpenMined/PySyft.git@16dae46b154dd755c18e941409b4ec771f5e2ca5#egg=syft
terminado==0.18.1
tinycss2==1.4.0
tomli==2.2.1
tornado==6.4.2
traitlets==5.14.3
types-python-dateutil==2.9.0.20241206
typing_extensions==4.13.0
uri-template==1.3.0
urllib3==2.3.0
wcwidth==0.2.13
webcolors==24.11.1
webencodings==0.5.1
websocket-client==1.8.0
widgetsnbextension==4.0.13
zipp==3.21.0

name: PySyft
channels:
  - defaults
  - https://repo.anaconda.com/pkgs/main
  - https://repo.anaconda.com/pkgs/r
  - conda-forge
dependencies:
  - _libgcc_mutex=0.1=main
  - _openmp_mutex=5.1=1_gnu
  - ca-certificates=2025.2.25=h06a4308_0
  - ld_impl_linux-64=2.40=h12ee557_0
  - libffi=3.4.4=h6a678d5_1
  - libgcc-ng=11.2.0=h1234567_1
  - libgomp=11.2.0=h1234567_1
  - libstdcxx-ng=11.2.0=h1234567_1
  - ncurses=6.4=h6a678d5_0
  - openssl=3.0.16=h5eee18b_0
  - pip=25.0=py39h06a4308_0
  - python=3.9.21=he870216_1
  - readline=8.2=h5eee18b_0
  - setuptools=75.8.0=py39h06a4308_0
  - sqlite=3.45.3=h5eee18b_0
  - tk=8.6.14=h39e8969_0
  - tzdata=2025a=h04d1e81_0
  - wheel=0.45.1=py39h06a4308_0
  - xz=5.6.4=h5eee18b_1
  - zlib=1.2.13=h5eee18b_1
  - pip:
      - anyio==4.9.0
      - argon2-cffi==23.1.0
      - argon2-cffi-bindings==21.2.0
      - args==0.1.0
      - arrow==1.3.0
      - asttokens==3.0.0
      - async-lru==2.0.5
      - attrs==25.3.0
      - babel==2.17.0
      - beautifulsoup4==4.13.3
      - bleach==6.2.0
      - certifi==2025.1.31
      - cffi==1.17.1
      - charset-normalizer==3.4.1
      - clint==0.5.1
      - comm==0.2.2
      - debugpy==1.8.13
      - decorator==5.2.1
      - defusedxml==0.7.1
      - exceptiongroup==1.2.2
      - executing==2.2.0
      - fastjsonschema==2.21.1
      - fqdn==1.5.1
      - h11==0.14.0
      - httpcore==1.0.7
      - httpx==0.28.1
      - idna==3.10
      - importlib-metadata==8.6.1
      - iniconfig==2.1.0
      - ipykernel==6.29.5
      - ipython==8.18.1
      - ipywidgets==8.1.5
      - isoduration==20.11.0
      - jedi==0.19.2
      - jinja2==3.1.6
      - json5==0.10.0
      - jsonpointer==3.0.0
      - jsonschema==4.23.0
      - jsonschema-specifications==2024.10.1
      - jupyter==1.1.1
      - jupyter-client==8.6.3
      - jupyter-console==6.6.3
      - jupyter-core==5.7.2
      - jupyter-events==0.12.0
      - jupyter-lsp==2.2.5
      - jupyter-server==2.15.0
      - jupyter-server-terminals==0.5.3
      - jupyterlab==4.3.6
      - jupyterlab-pygments==0.3.0
      - jupyterlab-server==2.27.3
      - jupyterlab-widgets==3.0.13
      - line-profiler==4.2.0
      - markupsafe==3.0.2
      - matplotlib-inline==0.1.7
      - mistune==3.1.3
      - nbclient==0.10.2
      - nbconvert==7.16.6
      - nbformat==5.10.4
      - nest-asyncio==1.6.0
      - notebook==7.3.3
      - notebook-shim==0.2.4
      - numpy==1.26.4
      - overrides==7.7.0
      - packaging==24.2
      - pandocfilters==1.5.1
      - parso==0.8.4
      - pexpect==4.9.0
      - phe==1.5.0
      - platformdirs==4.3.7
      - pluggy==1.5.0
      - prometheus-client==0.21.1
      - prompt-toolkit==3.0.50
      - psutil==7.0.0
      - ptyprocess==0.7.0
      - pure-eval==0.2.3
      - pycparser==2.22
      - pygments==2.19.1
      - pyrserve==1.0.4
      - pytest==8.3.5
      - python-dateutil==2.9.0.post0
      - python-json-logger==3.3.0
      - pyyaml==6.0.2
      - pyzmq==26.3.0
      - referencing==0.36.2
      - requests==2.32.3
      - rfc3339-validator==0.1.4
      - rfc3986-validator==0.1.1
      - rpds-py==0.24.0
      - send2trash==1.8.3
      - six==1.17.0
      - sniffio==1.3.1
      - soupsieve==2.6
      - stack-data==0.6.3
      - terminado==0.18.1
      - tinycss2==1.4.0
      - tomli==2.2.1
      - tornado==6.4.2
      - traitlets==5.14.3
      - types-python-dateutil==2.9.0.20241206
      - typing-extensions==4.13.0
      - uri-template==1.3.0
      - urllib3==2.3.0
      - wcwidth==0.2.13
      - webcolors==24.11.1
      - webencodings==0.5.1
      - websocket-client==1.8.0
      - widgetsnbextension==4.0.13
      - zipp==3.21.0
prefix: /opt/conda/envs/PySyft

tests/test_tensor.py::ShapeTests::testShape tests/test_tensor.py::SumTests::testDimIsNotNoneInt tests/test_tensor.py::SumTests::testDimNoneInt
tests/test_tensor.py::AddTests::testInplace tests/test_tensor.py::AddTests::testScalar tests/test_tensor.py::AddTests::testSimple tests/test_tensor.py::SubTests::testInplace tests/test_tensor.py::SubTests::testScalar tests/test_tensor.py::SubTests::testSimple tests/test_tensor.py::MultTests::testInplace tests/test_tensor.py::MultTests::testScalar tests/test_tensor.py::MultTests::testSimple tests/test_tensor.py::DivTests::testInplace tests/test_tensor.py::DivTests::testScalar tests/test_tensor.py::DivTests::testSimple
syft/tensor.py
syft/tensor.py