How do I round the decimals to one digit in python?

huangapple
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英文:

How do I round the decimals to one digit in python?

问题

I have written a code using which I have to duplicate a statement 100 times. In that, the variable "degrees" has to be iterated by 3.6. Instead of getting a decimal number with 1 decimal digit, I get something like this:

  1. 95%{background-color: linear-gradient(342.0deg, red, blue)}
  2. 96%{background-color: linear-gradient(345.6deg, red, blue)}
  3. 97%{background-color: linear-gradient(349.2deg, red, blue)}
  4. 98%{background-color: linear-gradient(352.8deg, red, blue)}

Here is my code:

  1. degrees = 0.0
  2. percent = 0
  4. for i in range(101):
  5.     print(str(percent) + "%{background-color: linear-gradient(" + str(degrees) + "deg, red, blue)}")
  6.     percent += 1
  7.     degrees += 3.6

I want the code to return the result with one decimal point.

英文:

I have written a code using which I have to duplicate a statement 100 times. In that, the variable "degrees" has to be iterated by 3.6. Instead of getting a decimal number with 1 decimal digit, I get something like this:

  1. 95%{background-color: linear-gradient(342.0000000000002deg, red, blue)}
  2. 96%{background-color: linear-gradient(345.60000000000025deg, red, blue)}
  3. 97%{background-color: linear-gradient(349.2000000000003deg, red, blue)}
  4. 98%{background-color: linear-gradient(352.8000000000003deg, red, blue)}

Here is my code:

  1. degrees = 0
  2. percent = 0
  4. for i in range(101):
  5.     print(str(percent) + "%{background-color: linear-gradient(" + str(degrees) + "deg, red, blue)}")
  6.     percent += 1
  7.     degrees += 3.6

I want the code to return the result with one decimal point.

答案1

得分: 1

0%{background-color: linear-gradient(0.0度, 红色, 蓝色)}
1%{background-color: linear-gradient(3.6度, 红色, 蓝色)}
2%{background-color: linear-gradient(7.2度, 红色, 蓝色)}
3%{background-color: linear-gradient(10.8度, 红色, 蓝色)}
4%{background-color: linear-gradient(14.4度, 红色, 蓝色)}
5%{background-color: linear-gradient(18.0度, 红色, 蓝色)}
6%{background-color: linear-gradient(21.6度, 红色, 蓝色)}
7%{background-color: linear-gradient(25.2度, 红色, 蓝色)}
......

英文:

you can use f-format string like this

  1. degrees = 0
  2. percent = 0
  4. for i in range(101):
  5.     print(f"{percent}%{{background-color: linear-gradient({degrees:.1f}deg, red, blue)}}")
  6.     percent += 1
  7.     degrees += 3.6

the output is

  1. 0%{background-color: linear-gradient(0.0deg, red, blue)}
  2. 1%{background-color: linear-gradient(3.6deg, red, blue)}
  3. 2%{background-color: linear-gradient(7.2deg, red, blue)}
  4. 3%{background-color: linear-gradient(10.8deg, red, blue)}
  5. 4%{background-color: linear-gradient(14.4deg, red, blue)}
  6. 5%{background-color: linear-gradient(18.0deg, red, blue)}
  7. 6%{background-color: linear-gradient(21.6deg, red, blue)}
  8. 7%{background-color: linear-gradient(25.2deg, red, blue)}
  9. .......

答案2

得分: 0

你可以使用 round(number, number digit)

  1. for i in range(101):
  2.     print(str(percent) + "%{background-color: linear-gradient(" + str(round(degrees,1)) + "deg, red, blue)}")

如果你的小数严格大于5，它将四舍五入到下一个（ceil）整数，否则它将四舍五入到 floor（floor）。

  1. print(round(342.14,1)) # 342.1
  2. print(round(342.15,1)) # 342.1
  3. print(round(342.16,1)) # 342.2
英文:

You can use round(number, number digit)

  1. for i in range(101):
  2.     print(str(percent) + "%{background-color: linear-gradient(" + str(round(degrees,1)) + "deg, red, blue)}")

If your decimal number is strictly superior to 5, it will round to the next (ceil) whole number, otherwise it will round off to floor (floor).

  1. print(round(342.14,1)) # 342.1
  2. print(round(342.15,1)) # 342.1
  3. print(round(342.16,1)) # 342.2

huangapple
  • 本文由 发表于 2023年7月18日 11:01:13
  • 转载请务必保留本文链接：https://go.coder-hub.com/76709271.html
  • decimal
  • floating-point
  • iteration
  • python
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