latex2sympy2
About
latex2sympy2 parses LaTeX math expressions and converts it into the equivalent SymPy form. The latex2sympy2 is adapted from augustt198/latex2sympy and purdue-tlt / latex2sympy.
ANTLR is used to generate the parser.
Features
- Arithmetic: Add (+), Sub (-), Dot Mul (·), Cross Mul (×), Frac (/), Power (^), Abs (|x|), Sqrt (√), etc...
- Alphabet: a - z, A - Z, α - ω, Subscript (x_1), Accent Bar(ā), etc...
- Common Functions: gcd, lcm, floor, ceil, max, min, log, ln, exp, sin, cos, tan, csc, sec, cot, arcsin, sinh, arsinh, etc...
- Calculous: Limit ($lim_{n\to\infty}$), Derivation ($\frac{d}{dx}(x^2+x)$), Integration ($\int xdx$), etc...
- Linear Algebra: Matrix, Determinant, Transpose, Inverse, Elementary Transformation, etc...
- Other: Binomial...
NOTICE: It will do some irreversible calculations when converting determinants, transposed matrixes and elementary transformations...
Installation
pip install latex2sympy2
Requirements: sympy and antlr4-python3-runtime packages.
Usage
Basic
In Python:
from latex2sympy2 import latex2sympy, latex2latex
tex = r"\frac{d}{dx}(x^{2}+x)"
# Or you can use '\mathrm{d}' to replace 'd'
latex2sympy(tex)
# => "Derivative(x**2 + x, x)"
latex2latex(tex)
# => "2 x + 1"
Examples
| LaTeX | Converted SymPy | Calculated Latex |
|---|---|---|
x^{3} $x^{3}$ |
x**3 |
x^{3} $x^{3}$ |
\frac{d}{dx} tx $\frac{d}{dx}tx$ |
Derivative(x*t, x) |
t $t$ |
\sum_{i = 1}^{n} i $\sum_{i = 1}^{n} i$ |
Sum(i, (i, 1, n)) |
\frac{n \left(n + 1\right)}{2} $\frac{n \left(n + 1\right)}{2}$ |
\int_{a}^{b} \frac{dt}{t} |
Integral(1/t, (t, a, b)) |
-\log{(a)} + \log{(b)} $-\log{(a)} + \log{(b)}$ |
| `(2x^3 - x + z) | {x=3}` $(2x^3 - x + z)|{x=3}$ | z + 51 |
If you want to read the math formula, you can click GitNotes.
Matrix
Determinant
from latex2sympy2 import latex2sympy
tex = r"\begin{vmatrix} x & 0 & 0 \\ 0 & x & 0 \\ 0 & 0 & x \end{vmatrix}"
latex2sympy(tex)
# => "x^{3}"
Transpose
from latex2sympy2 import latex2sympy
tex = r"\begin{pmatrix} 1 & 2 & 3 \\ 4 & 5 & 6 \\ 7 & 8 & 9 \end{pmatrix}^T"
# Or you can use "\begin{pmatrix}1&2&3\\4&5&6\\7&8&9\end{pmatrix}'"
latex2sympy(tex)
# => "Matrix([[1, 4, 7], [2, 5, 8], [3, 6, 9]])"
Elementary Transformation
from latex2sympy2 import latex2sympy
matrix = r'''
\begin{pmatrix}
1 & 2 & 3 \\
4 & 5 & 6 \\
7 & 8 & 9 \\
\end{pmatrix}
'''
# Scale the row with grammar "\xrightarrow{kr_n}"
tex = matrix + r'\xrightarrow{3r_1}'
latex2sympy(tex)
# => "Matrix([[3, 6, 9], [4, 5, 6], [7, 8, 9]])"
# Swap the cols with grammar "\xrightarrow{c_1<=>c_2}"
# Of course, you can use "\leftrightarrow" to replace "<=>"
tex = matrix + r'\xrightarrow{c_1<=>c_2}'
latex2sympy(tex)
# => "Matrix([[2, 1, 3], [5, 4, 6], [8, 7, 9]])"
# Scale the second row and add it to the first row
# with grammar "\xrightarrow{r_1+kr_2}"
tex = matrix + r'\xrightarrow{r_1+kr_2}'
latex2sympy(tex)
# => "Matrix([[4*k + 1, 5*k + 2, 6*k + 3], [4, 5, 6], [7, 8, 9]])"
# You can compose the transform with comma ","
# and grammar "\xrightarrow[4r_3]{2r_1, 3r_2}"
# Remember the priority of "{}" is higher than "[]"
tex = matrix + r'\xrightarrow[4r_3]{2r_1, 3r_2}'
latex2sympy(tex)
# => "Matrix([[2, 4, 6], [12, 15, 18], [28, 32, 36]])"
Variances
from latex2sympy2 import latex2sympy, variances, var, set_variances
# Assign x a value of 1
latex2sympy(r"x = 1")
# Calculate x + y
latex2sympy(r"x + y")
# => "y + 1"
# Get all variances
print(variances)
# => "{x: 1}"
# Get variance of "x"
print(var["x"])
# => "1"
# Reset all variances
set_variances({})
latex2sympy(r"x + y")
# => "x + y"
Complex Number Support
from latex2sympy2 import set_real
set_real(False)
Contributing
If you want to add a new grammar, you can fork the code from OrangeX4/latex2sympy.
- To modify parser grammar, view the existing structure in
PS.g4. - To modify the action associated with each grammar, look into
latex2sympy.py.
Contributors are welcome! Feel free to open a pull request or an issue.
1 maintainer
Download files
Download the file for your platform. If you're not sure which to choose, learn more about installing packages.
Source Distributions
No source distribution files available for this release.See tutorial on generating distribution archives.
Built Distribution
Filter files by name, interpreter, ABI, and platform.
If you're not sure about the file name format, learn more about wheel file names.
Copy a direct link to the current filters
File details
Details for the file latex2sympy2-1.6.14-py3-none-any.whl.
File metadata
- Download URL: latex2sympy2-1.6.14-py3-none-any.whl
- Upload date:
- Size: 75.3 kB
- Tags: Python 3
- Uploaded using Trusted Publishing? No
- Uploaded via:
twine/3.8.0 pkginfo/1.8.2 readme-renderer/34.0 requests/2.22.0 requests-toolbelt/0.9.1 urllib3/1.26.9 tqdm/4.63.0 importlib-metadata/4.11.3 keyring/18.0.1 rfc3986/2.0.0 colorama/0.4.3 CPython/3.8.10
File hashes
| Algorithm | Hash digest | |
|---|---|---|
| SHA256 |
789b7704e1ae3190bccd4f9d5d35dd3a33380ec5cfb09cd20d3bcb8d81d51a6f
|
|
| MD5 |
d9549d4f39de043af46cece9c60988e7
|
|
| BLAKE2b-256 |
ee4694813ef1e50819fedd1fa091745e1dbb3a25d3bb0c1ec4dd8e92062b652b
|
