在用f literals编写数学表达式的matplotlob中；如何处理加薪的力量（^）
我想在matplotlob图上显示某些方程式。按照用matplotlob编写数学表达式我写了以下内容。该问题的系数也仅在运行时可用，因此我还使用 python f-string文字。但是它们有些不兼容，因为 {在两种情况下具有不同的含义。这是一个具体示例：
import matplotlib.pyplot as plt
a = 0.3543545
b = 6.834
c = -126.732
s0 = r'$\alpha_i > \beta_i$'
s1 = r"$0.354 * x^{6.834} -126.732 $" # Works as expected
s2 = fr"${a:.3f} * x^{{b:.3f}} {c:+.3f}$" # Doesn't work; Same as S1 but with f-string literals
s3 = fr"${a:.3f} * x^{b:.3f} {c:+.3f}$" # Doesn't work;
plt.text(0.1, 0.9, s0)
plt.text(0.1, 0.8, s1)
plt.text(0.1, 0.7, s2)
plt.text(0.1, 0.6, s3)
plt.show()
时，如何在使用f-string文字时如何用S2或S3与S3复制相同的结果？
I want to display certain equations on a Matplotlob plot. Following Writing mathematical expressions with Matplotlob I wrote the following. The coefficients for the question are also only available at runtime, so I also use python f-string literals. But they are somewhat incompatible since { has different meaning in the two cases. Here is a concrete example:
import matplotlib.pyplot as plt
a = 0.3543545
b = 6.834
c = -126.732
s0 = r'$\alpha_i > \beta_i
So how to reproduce the same results with s2 or s3 as s1 when using f-string literals?
s1 = r"$0.354 * x^{6.834} -126.732 quot; # Works as expected
s2 = fr"${a:.3f} * x^{{b:.3f}} {c:+.3f}quot; # Doesn't work; Same as S1 but with f-string literals
s3 = fr"${a:.3f} * x^{b:.3f} {c:+.3f}quot; # Doesn't work;
plt.text(0.1, 0.9, s0)
plt.text(0.1, 0.8, s1)
plt.text(0.1, 0.7, s2)
plt.text(0.1, 0.6, s3)
plt.show()
So how to reproduce the same results with s2 or s3 as s1 when using f-string literals?
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在F串中，需要由两层表示卷发括号，因此您需要三层来满足您的要求：
In the f-string, curly braces need to be represented by two layers, so you need three layers to meet your requirements: