我有一个变量叫做
b
谁的价值是这样决定的:
b = float(input("What is your y-intercept?"))
. 在文件的后面,我想取
乙
(假设它是一个浮点数)并将其转换为如下分数:
print(Fraction(b))
. 我知道有点像
print(Fraction(0.45))
将打印
8106479329266893/18014398509481984
但是
print(Fraction('0.45'))
将打印
9/20
. 我怎么能用一个变量得到同样的结果呢?做
print(Fraction('b'))
给我这个错误:
ValueError: Invalid literal for Fraction: 'b'
.
代码:
from fractions import Fraction
elif equation == 'slope':
slope = input("Do you need to find slope? Type 'yes' or 'no'.")
if slope == 'yes':
y2 = float(input("What's your y2 value?:"))
y1 = float(input("What is your y1 value?"))
x2 = float(input("What is your x2 value?:"))
x1 = float(input("What is your x1 value?:"))
m = y2-y1/x2-x1
print(str(m))
elif slope == 'no':
m = input("What is the slope?")
b = float(input("What is your y-intercept?"))
m = str(m)
b = str(b)
print("Your equation is: y = {}x + {}".format(m,b))
simplify = input("Do you want to simplify this to standard form? Type in 'yes' or 'no'")
if simplify == 'yes':
m = float(m)
b = float(b)
if m < 0:
pos_m = m*-1
if isinstance(b, float):
print(Fraction(b)) #Works, but not what I want
print(Fraction('b')) #Does not work
