pep8speaks: Hello @michiboo! Thanks for opening this PR. We checked the lines you've touched for [PEP 8](https://www.python.org/dev/peps/pep-0008) issues, and found:

* In the file [`src/einsteinpy/symbolic/einstein.py`](https://github.com/einsteinpy/einsteinpy/blob/b45e0f548e4e27273c4ab0b41245896157828a5d/src/einsteinpy/symbolic/einstein.py):

> [Line 132:10](https://github.com/einsteinpy/einsteinpy/blob/b45e0f548e4e27273c4ab0b41245896157828a5d/src/einsteinpy/symbolic/einstein.py#L132): [W292](https://duckduckgo.com/?q=pep8%20W292) no newline at end of file


shreyasbapat: Good thing @michiboo .

Can you join our chatroom, we can discuyss why this fails there :D
ritzvik: @michiboo Are you still on it??
michiboo: > @michiboo Are you still on it??

Hi Yes, sorry for the delay, been busy lately :/
ritzvik: @michiboo Can you rebase the commits. Then the ‘docs’ test would pass.
After that lemme take care of the unit tests.
codecov[bot]: # [Codecov](https://codecov.io/gh/einsteinpy/einsteinpy/pull/357?src=pr&el=h1) Report
> Merging [#357](https://codecov.io/gh/einsteinpy/einsteinpy/pull/357?src=pr&el=desc) into [master](https://codecov.io/gh/einsteinpy/einsteinpy/commit/17580ec82dae91bf39226df89115bb4876d5c199?src=pr&el=desc) will **decrease** coverage by `0.1%`.
> The diff coverage is `33.33%`.

[![Impacted file tree graph](https://codecov.io/gh/einsteinpy/einsteinpy/pull/357/graphs/tree.svg?width=650&token=H3oDVYA11f&height=150&src=pr)](https://codecov.io/gh/einsteinpy/einsteinpy/pull/357?src=pr&el=tree)

```diff
@@            Coverage Diff            @@
##           master    #357      +/-   ##
=========================================
- Coverage    94.5%   94.4%   -0.11%     
=========================================
  Files          47      47              
  Lines        1765    1768       +3     
=========================================
+ Hits         1668    1669       +1     
- Misses         97      99       +2
```


| [Impacted Files](https://codecov.io/gh/einsteinpy/einsteinpy/pull/357?src=pr&el=tree) | Coverage Δ | |
|---|---|---|
| [src/einsteinpy/symbolic/einstein.py](https://codecov.io/gh/einsteinpy/einsteinpy/pull/357/diff?src=pr&el=tree#diff-c3JjL2VpbnN0ZWlucHkvc3ltYm9saWMvZWluc3RlaW4ucHk=) | `92% <33.33%> (-8%)` | :arrow_down: |

------

[Continue to review full report at Codecov](https://codecov.io/gh/einsteinpy/einsteinpy/pull/357?src=pr&el=continue).
> **Legend** - [Click here to learn more](https://docs.codecov.io/docs/codecov-delta)
> `Δ = absolute <relative> (impact)`, `ø = not affected`, `? = missing data`
> Powered by [Codecov](https://codecov.io/gh/einsteinpy/einsteinpy/pull/357?src=pr&el=footer). Last update [17580ec...2c6660e](https://codecov.io/gh/einsteinpy/einsteinpy/pull/357?src=pr&el=lastupdated). Read the [comment docs](https://docs.codecov.io/docs/pull-request-comments).

diff --git a/src/einsteinpy/symbolic/einstein.py b/src/einsteinpy/symbolic/einstein.py
index 10fa945..1eb2dc1 100644
--- a/src/einsteinpy/symbolic/einstein.py
+++ b/src/einsteinpy/symbolic/einstein.py
@@ -90,3 +90,23 @@ class EinsteinTensor(BaseRelativityTensor):
             new_tensor, self.syms, config=newconfig, parent_metric=metric
         )
         return new_obj
+
+    def lorentz_transform(self, transformation_matrix):
+        """
+        Performs a Lorentz transform on the tensor.
+
+        Parameters
+        ----------
+            transformation_matrix : ~sympy.tensor.array.dense_ndim_array.ImmutableDenseNDimArray or list
+                Sympy Array or multi-dimensional list containing Sympy Expressions
+
+        Returns
+        -------
+            ~einsteinpy.symbolic.tensor.BaseRelativityTensor
+                lorentz transformed tensor(or vector)
+
+        """
+        t = super(EinsteinTensor, self).lorentz_transform(transformation_matrix)
+        return EinsteinTensor(
+            t.tensor(), syms=self.syms, config=self._config, parent_metric=None
+        )

Add lorentz_tranform to all the classes in symbolic module
🐞 **Problem**
Many classes like `MetricTensor`, `RiemannCurvatureTensor` does not have the `lorentz_transform()` function as of now!

🎯 **Goal**
Implement it in a similar way as that in `GenericVector` class in `symbolic/vector.py`

  - [x] `GenericVector`
  - [ ] `MetricTensor`
  - [ ] `ChristoffelSymbols`
  - [ ] `RiemannCurvatureTensor`
  - [ ] `RicciTensor`
  - [ ] `StressEnergyMomentumTensor`
  - [x] `EinsteinTensor`
  - [ ] `WeylTensor`
  - [ ] `SchoutenTensor`

📋  **Steps to solve the problem**

 * Comment below about what you've started working on.
 * Add, commit, push your changes
 * Submit a pull request and add this in comments - `Addresses #<put issue number here>`
 * Ask for a review in comments section of pull request
 * Celebrate your contribution to this project 🎉

diff --git a/src/einsteinpy/tests/test_symbolic/test_einstein.py b/src/einsteinpy/tests/test_symbolic/test_einstein.py
index a68d75d..79c5450 100644
--- a/src/einsteinpy/tests/test_symbolic/test_einstein.py
+++ b/src/einsteinpy/tests/test_symbolic/test_einstein.py
@@ -1,9 +1,14 @@
 import numpy as np
 import pytest
 import sympy
-from sympy import cos, simplify, sin, sinh, tensorcontraction
+from sympy import cos, cosh, simplify, sin, sinh, symbols, tensorcontraction
 
-from einsteinpy.symbolic import EinsteinTensor, MetricTensor, RicciScalar
+from einsteinpy.symbolic import (
+    EinsteinTensor,
+    MetricTensor,
+    RicciScalar,
+    simplify_sympy_array,
+)
 
 
 def schwarzschild_metric():
@@ -66,3 +71,32 @@ def test_EinsteinTensor_symbols_parent_metric_wrong_change_config():
     except Exception:
         boolstore = True
     assert boolstore
+
+
+def test_lorentz_transform():
+    # currently testing correct instance, proper theoretical tests needed
+    def get_lorentz_matrix():
+        list2d = [[0 for t1 in range(4)] for t2 in range(4)]
+        phi = symbols("phi")
+        list2d[0][0], list2d[0][1], list2d[1][0], list2d[1][1] = (
+            cosh(phi),
+            -sinh(phi),
+            -sinh(phi),
+            cosh(phi),
+        )
+        list2d[2][2], list2d[3][3] = 1, 1
+        return list2d
+
+    def get_tensor():
+        x, y, z, w = symbols("x y z w")
+        list2d = [[0 for t1 in range(4)] for t2 in range(4)]
+        list2d[0][0], list2d[0][1], list2d[1][0], list2d[1][1] = x, z, z, x
+        list2d[2][2], list2d[3][3] = y, y
+        return EinsteinTensor(
+            list2d, syms=(x, y, z, w), config="lu", parent_metric=None
+        )
+
+    tm = get_lorentz_matrix()
+    t0 = get_tensor()
+    t1 = t0.lorentz_transform(tm)
+    assert isinstance(t1, EinsteinTensor)

pip install -e .[dev]
parse_log_pytest
pytest
pytest pytest-cov pytest-xdist pytest-mock pytest-asyncio
3.7
pytest --no-header -rA --tb=line --color=no -p no:cacheprovider -W ignore::DeprecationWarning
alabaster==0.7.13
astropy==4.3.1
attrs @ file:///croot/attrs_1668696182826/work
Babel==2.14.0
backcall==0.2.0
beautifulsoup4==4.13.3
black==23.3.0
bleach==6.0.0
cachetools==5.5.2
certifi @ file:///croot/certifi_1671487769961/work/certifi
chardet==5.2.0
charset-normalizer==3.4.1
click==8.1.8
colorama==0.4.6
comm==0.1.4
coverage==7.2.7
cycler==0.11.0
debugpy==1.7.0
decorator==5.1.1
defusedxml==0.7.1
distlib==0.3.9
docutils==0.19
-e git+https://github.com/einsteinpy/einsteinpy.git@094d896d431b92ef2e20646a4dac9eab1420d195#egg=einsteinpy
entrypoints==0.4
execnet==2.0.2
fastjsonschema==2.21.1
filelock==3.12.2
flit_core @ file:///opt/conda/conda-bld/flit-core_1644941570762/work/source/flit_core
fonttools==4.38.0
idna==3.10
imagesize==1.4.1
importlib-metadata==6.7.0
importlib-resources==5.12.0
iniconfig @ file:///home/linux1/recipes/ci/iniconfig_1610983019677/work
ipykernel==6.16.2
ipython==7.34.0
ipywidgets==8.1.5
isort==5.11.5
jedi==0.19.2
Jinja2==3.1.6
jsonschema==4.17.3
jupyter-sphinx==0.4.0
jupyter_client==7.4.9
jupyter_core==4.12.0
jupyterlab-pygments==0.2.2
jupyterlab_widgets==3.0.13
kiwisolver==1.4.5
llvmlite==0.39.1
MarkupSafe==2.1.5
matplotlib==3.5.3
matplotlib-inline==0.1.6
mistune==3.0.2
mpmath==1.3.0
mypy-extensions==1.0.0
nbclient==0.7.4
nbconvert==7.6.0
nbformat==5.8.0
nbsphinx==0.9.7
nest-asyncio==1.6.0
numba==0.56.4
numpy==1.21.6
packaging==24.0
pandocfilters==1.5.1
parso==0.8.4
pathspec==0.11.2
pexpect==4.9.0
pickleshare==0.7.5
Pillow==9.5.0
pkgutil_resolve_name==1.3.10
platformdirs==4.0.0
plotly==5.18.0
pluggy==1.2.0
prompt_toolkit==3.0.48
psutil==7.0.0
ptyprocess==0.7.0
py @ file:///opt/conda/conda-bld/py_1644396412707/work
pycodestyle==2.10.0
pyerfa==2.0.0.3
Pygments==2.17.2
pyparsing==3.1.4
pyproject-api==1.5.3
pyrsistent==0.19.3
pytest==7.1.2
pytest-asyncio==0.21.2
pytest-cov==2.5.1
pytest-mock==3.11.1
pytest-xdist==3.5.0
python-dateutil==2.9.0.post0
pytz==2025.2
pyzmq==26.2.1
requests==2.31.0
scipy==1.7.3
six==1.17.0
snowballstemmer==2.2.0
soupsieve==2.4.1
Sphinx==5.3.0
sphinxcontrib-applehelp==1.0.2
sphinxcontrib-devhelp==1.0.2
sphinxcontrib-htmlhelp==2.0.0
sphinxcontrib-jsmath==1.0.1
sphinxcontrib-qthelp==1.0.3
sphinxcontrib-serializinghtml==1.1.5
sympy==1.10.1
tenacity==8.2.3
tinycss2==1.2.1
tomli @ file:///opt/conda/conda-bld/tomli_1657175507142/work
tornado==6.2
tox==4.8.0
traitlets==5.9.0
typed-ast==1.5.5
typing_extensions==4.7.1
urllib3==2.0.7
virtualenv==20.26.6
wcwidth==0.2.13
webencodings==0.5.1
widgetsnbextension==4.0.13
zipp @ file:///croot/zipp_1672387121353/work

name: einsteinpy
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
  - attrs=22.1.0=py37h06a4308_0
  - ca-certificates=2025.2.25=h06a4308_0
  - certifi=2022.12.7=py37h06a4308_0
  - flit-core=3.6.0=pyhd3eb1b0_0
  - importlib_metadata=4.11.3=hd3eb1b0_0
  - iniconfig=1.1.1=pyhd3eb1b0_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=1.1.1w=h7f8727e_0
  - pip=22.3.1=py37h06a4308_0
  - py=1.11.0=pyhd3eb1b0_0
  - pytest=7.1.2=py37h06a4308_0
  - python=3.7.16=h7a1cb2a_0
  - readline=8.2=h5eee18b_0
  - setuptools=65.6.3=py37h06a4308_0
  - sqlite=3.45.3=h5eee18b_0
  - tk=8.6.14=h39e8969_0
  - tomli=2.0.1=py37h06a4308_0
  - wheel=0.38.4=py37h06a4308_0
  - xz=5.6.4=h5eee18b_1
  - zipp=3.11.0=py37h06a4308_0
  - zlib=1.2.13=h5eee18b_1
  - pip:
      - alabaster==0.7.13
      - astropy==4.3.1
      - babel==2.14.0
      - backcall==0.2.0
      - beautifulsoup4==4.13.3
      - black==23.3.0
      - bleach==6.0.0
      - cachetools==5.5.2
      - chardet==5.2.0
      - charset-normalizer==3.4.1
      - click==8.1.8
      - colorama==0.4.6
      - comm==0.1.4
      - coverage==7.2.7
      - cycler==0.11.0
      - debugpy==1.7.0
      - decorator==5.1.1
      - defusedxml==0.7.1
      - distlib==0.3.9
      - docutils==0.19
      - einsteinpy==0.3.dev0
      - entrypoints==0.4
      - execnet==2.0.2
      - fastjsonschema==2.21.1
      - filelock==3.12.2
      - fonttools==4.38.0
      - idna==3.10
      - imagesize==1.4.1
      - importlib-metadata==6.7.0
      - importlib-resources==5.12.0
      - ipykernel==6.16.2
      - ipython==7.34.0
      - ipywidgets==8.1.5
      - isort==5.11.5
      - jedi==0.19.2
      - jinja2==3.1.6
      - jsonschema==4.17.3
      - jupyter-client==7.4.9
      - jupyter-core==4.12.0
      - jupyter-sphinx==0.4.0
      - jupyterlab-pygments==0.2.2
      - jupyterlab-widgets==3.0.13
      - kiwisolver==1.4.5
      - llvmlite==0.39.1
      - markupsafe==2.1.5
      - matplotlib==3.5.3
      - matplotlib-inline==0.1.6
      - mistune==3.0.2
      - mpmath==1.3.0
      - mypy-extensions==1.0.0
      - nbclient==0.7.4
      - nbconvert==7.6.0
      - nbformat==5.8.0
      - nbsphinx==0.9.7
      - nest-asyncio==1.6.0
      - numba==0.56.4
      - numpy==1.21.6
      - packaging==24.0
      - pandocfilters==1.5.1
      - parso==0.8.4
      - pathspec==0.11.2
      - pexpect==4.9.0
      - pickleshare==0.7.5
      - pillow==9.5.0
      - pkgutil-resolve-name==1.3.10
      - platformdirs==4.0.0
      - plotly==5.18.0
      - pluggy==1.2.0
      - prompt-toolkit==3.0.48
      - psutil==7.0.0
      - ptyprocess==0.7.0
      - pycodestyle==2.10.0
      - pyerfa==2.0.0.3
      - pygments==2.17.2
      - pyparsing==3.1.4
      - pyproject-api==1.5.3
      - pyrsistent==0.19.3
      - pytest-asyncio==0.21.2
      - pytest-cov==2.5.1
      - pytest-mock==3.11.1
      - pytest-xdist==3.5.0
      - python-dateutil==2.9.0.post0
      - pytz==2025.2
      - pyzmq==26.2.1
      - requests==2.31.0
      - scipy==1.7.3
      - six==1.17.0
      - snowballstemmer==2.2.0
      - soupsieve==2.4.1
      - sphinx==5.3.0
      - sphinxcontrib-applehelp==1.0.2
      - sphinxcontrib-devhelp==1.0.2
      - sphinxcontrib-htmlhelp==2.0.0
      - sphinxcontrib-jsmath==1.0.1
      - sphinxcontrib-qthelp==1.0.3
      - sphinxcontrib-serializinghtml==1.1.5
      - sympy==1.10.1
      - tenacity==8.2.3
      - tinycss2==1.2.1
      - tornado==6.2
      - tox==4.8.0
      - traitlets==5.9.0
      - typed-ast==1.5.5
      - typing-extensions==4.7.1
      - urllib3==2.0.7
      - virtualenv==20.26.6
      - wcwidth==0.2.13
      - webencodings==0.5.1
      - widgetsnbextension==4.0.13
prefix: /opt/conda/envs/einsteinpy

src/einsteinpy/tests/test_symbolic/test_einstein.py::test_lorentz_transform
src/einsteinpy/tests/test_symbolic/test_einstein.py::test_EinsteinTensor_ValueError_wrong_config_length src/einsteinpy/tests/test_symbolic/test_einstein.py::test_EinsteinTensor_trace_negetive_of_Ricci_Scalar_in_4D[metric0] src/einsteinpy/tests/test_symbolic/test_einstein.py::test_EinsteinTensor_trace_negetive_of_Ricci_Scalar_in_4D[metric1] src/einsteinpy/tests/test_symbolic/test_einstein.py::test_EinsteinTensor_symbols_parent_metric_wrong_change_config
src/einsteinpy/symbolic/einstein.py
src/einsteinpy/symbolic/einstein.py