I am trying to write theta in a specific format to a .txt file. I present the current and expected output.
import numpy as np
theta = np.pi/3
with open('Contact angle.txt', 'w+') as f:
f.write(f"theta = {str(theta)}\n")
The current output is
theta = 1.0471975511965976
The expected output is
theta = pi/3
NumPy doesn't understand symbolic math, so that's not going to work. What you should probably use instead is SymPy.
>>> import sympy
>>> theta = sympy.pi / 3
>>> theta
pi/3
And if you need to convert it to float, you can do that:
>>> float(theta)
1.0471975511965979
Why not code it like this:
theta = "pi/3"
with open('Contact angle.txt', 'w+') as f:
f.write(f"theta = {theta}\n")
This might be a job that is best suited for SymPy.
If theta will always be pi/<integer>, then you could do something like
import numpy as np
theta = np.pi/3
divisor = int(np.pi/theta)
with open('Contact angle.txt', 'w+') as f:
f.write(f'theta = pi/{divisor}\n")
The code will have to get a lot more fancy if theta is always some fraction of pi: theta = <integer1>pi/<integer2>
you can write theta as a string and use the function eval to get the value of theta like this:
from numpy import pi
theta = "pi/3"
with open('Contact angle.txt', 'w+') as f:
f.write(f"theta = {theta}\n")
the output of eval(theta) will be 1.0471975511965976
f.write("theta = pi/3 \n")thetaand I want it to write automatically to the txt file in this format.theta = 1.1?