How to an extra string to the display of an object with "display" in Jupyter, using Python?

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英文:

How to an extra string to the display of an object with "display" in Jupyter, using Python?

问题

I have a number of mathematical objects created with SymPy, which display fine in Jupyter using "display". For example, there are a number of functions which I can display with:

Question 1: f1(x)
Question 2: f2(x)

and so on. But what I want is to prefix each line with some explanatory text, so the output is, for example:

Question 1: f1(x)
Question 2: f2(x)

with the functions f1(x), f2(x) displayed properly typeset (which "display" provides).

The nearest I've got is with matrices:

M = sympy.Matrix([["(a)",f1(x)],["(b)",f2(x)]])
display(M)

but this has two problems: (1) it shows the matrix delimiters, and (2) it strips the parentheses from "(a)" and "(b)".

So I'm still hoping for help: how to add a string to a line that uses "display". Thanks!

英文:

I have a number of mathematical objects created with SymPy, which display fine in Jupyter using "display". For example, there are a number of functions which I can display with:

display(f1(x))
display(f2(x))

and so on. But what I want is to prefix each line with some explanatory text, so the output is, for example:

Question 1: f1(x)

Question 2: f2(x)

with the functions f1(x), f2(x) displayed properly typeset (which "display" provides).

The nearest I've got is with matrices:

M = sympy.Matrix([["(a)",f1(x)],["(b)",f2(x)]])
display(M)

but this has two problems: (1) it shows the matrix delimiters, and (2) it strips the parentheses from "(a)" and "(b)".

So I'm still hoping for help: how to add a string to a line that uses "display". Thanks!

答案1

得分: 1

Option 1: 使用 Math()

我认为最简单的方法是结合使用 Math(),就像这里以及相关源代码中所示。

import sympy as sym
from IPython.display import Math
x = sym.symbols('x')
I = sym.integrate(1/(1+x**2), (x, 0, 1))
y = 2
z = 4
Math(rf'\text{{按1计算 }} {x}^{y} \text{{或按2计算 }} \frac{y}{z} \text{{或按其他方式计算}} {sym.latex(I)}')

与此相关的是此帖子此帖子

在你的例子中,该方法略微转化为:

import sympy as sym
from IPython.display import Math
x = sym.symbols('x')
I = sym.integrate(1/(1+x**2), (x, 0, 1))
y = 2
z = 4
display(Math(rf'\text{{问题1: }} {x}^{y}'))
display(Math(rf'\text{{问题2: }} {sym.latex(I)}'))

Option 2: 使用带有美元符号指定Latex的Markdown

你可以使用一个我在这里构建的示例的变体,其中包含一些结合Markdown和f-strings的sympy使用:

from IPython.display import Markdown, display
def printmd(string):
    display(Markdown(string))
import sympy as sym
x = sym.symbols('x')
I = sym.integrate(1/(1+x**2), (x, 0, 1))
equation = r'$\int_{t=0}^1 \frac{1}{1+t^2}\,\text{d}t$'
printmd('**方程式:**')
printmd(f'问题2: {equation}')
printmd('**结果:**')
printmd(f'问题1 $ = {sym.latex(I)}$')
printmd('**或者,结合起来:**')
printmd(f'问题3: '+equation[:-2] + f' = {sym.latex(I)}$$')

我看到这是这个StackOverflow帖子的变体。

英文:

Option 1: Use Math()

I think the easiest would be to combine in the use of Math(), like here and sources therein.

import sympy as sym
from IPython.display import Math
x = sym.symbols('x')
I = sym.integrate(1/(1+x**2), (x, 0, 1))
y = 2
z = 4
Math(rf'\text{{Press 1 to compute }} {x}^{y} \text{{or 2 to compute }} \frac{y}{z} \text{{or something else all togeher different to computer}} {sym.latex(I)}')

Related to that is this post and this post.

That approach somewhat more translated to your example, that would be:

import sympy as sym
from IPython.display import Math
x = sym.symbols('x')
I = sym.integrate(1/(1+x**2), (x, 0, 1))
y = 2
z = 4
display(Math(rf'\text{{Question 1: }} {x}^{y}'))
display(Math(rf'\text{{Question 2: }} {sym.latex(I)}'))

Option 2: Use markdown with dollar signs to specify Latex

You can get very fancy with a variation on an example I built here that includes some sympy use combining markdown and f-strings:

from IPython.display import Markdown, display
def printmd(string):
    display(Markdown(string))
import sympy as sym
x = sym.symbols('x')
I = sym.integrate(1/(1+x**2), (x, 0, 1))
equation = r'$\int_{{t=0}}^1 \frac{{1}}{{1+t^2}}\,\text{d}t$'
printmd('**THE EQUATION:**')
printmd(f'Question 2: {equation}')
printmd('**THE RESULT:**')
printmd(f'Question 1 $  = {sym.latex(I)}$')
printmd('**OR, COMBINED:**')
printmd(f'Question 3: '+equation[:-2] + f' = {sym.latex(I)}$$')

I see that is a variation on this StackOverflow post.

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  • 本文由 发表于 2023年5月11日 13:40:37
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