Does anyone know how to convert int to float.
有谁知道如何将int转换为float。
For some reason, it keeps on printing 0. I want it to print a specific decimal.
由于某种原因，它继续打印0.我希望它打印一个特定的小数。
sum = 144
women_onboard = 314
proportion_womenclass3_survived = sum / np.size(women_onboard)
print 'Proportion of women in class3 who survived is %s' % proportion_womenclass3_survived
4 个解决方案
#1
7
Other than John's answer, you could also make one of the variable float, and the result will yield float.
除了John的答案之外，你还可以创建一个变量float，结果将产生float。
>>> 144 / 314.0
0.4585987261146497
#2
20
To convert an integer to a float in Python you can use the following:
要在Python中将整数转换为float，您可以使用以下命令：
float_version = float(int_version)
The reason you are getting 0 is that Python 2 returns an integer if the mathematical operation (here a division) is between two integers. So while the division of 144 by 314 is 0.45~~~, Python converts this to integer and returns just the 0 by eliminating all numbers after the decimal point.
你得到0的原因是，如果数学运算（这里是一个除法）在两个整数之间，Python 2会返回一个整数。因此，当144乘314的除法为0.45 ~~~时，Python将其转换为整数，并通过消除小数点后的所有数字返回0。
Alternatively you can convert one of the numbers in any operation to a float since an operation between a float and an integer would return a float. In your case you could write float(144)/314 or 144/float(314). Another, less generic code, is to say 144.0/314. Here 144.0 is a float so it’s the same thing.
或者，您可以将任何操作中的一个数字转换为浮点数，因为浮点数和整数之间的操作将返回一个浮点数。在你的情况下，你可以写float（144）/ 314或144 / float（314）。另一个不太通用的代码是144.0 / 314。 144.0这是一个浮点数，所以它是一样的。
#3
3
You can just multiply 1.0
你可以乘以1.0
>>> 1.0*144/314
0.4585987261146497
#4
2
In Python 3 this is the default behavior, but if you aren't using that you can import division like so:
在Python 3中，这是默认行为，但如果您不使用它，则可以像这样导入分区：
>>> from __future__ import division
>>> 144/314
0.4585987261146497
Alternatively you can cast one of the variables to a float when doing your division which will do the same thing
或者，您可以在执行分割时将其中一个变量强制转换为浮点数，这将执行相同的操作
sum = 144
women_onboard = 314
proportion_womenclass3_survived = sum / float(np.size(women_onboard))
#1
7
Other than John's answer, you could also make one of the variable float, and the result will yield float.
除了John的答案之外，你还可以创建一个变量float，结果将产生float。
>>> 144 / 314.0
0.4585987261146497
#2
20
To convert an integer to a float in Python you can use the following:
要在Python中将整数转换为float，您可以使用以下命令：
float_version = float(int_version)
The reason you are getting 0 is that Python 2 returns an integer if the mathematical operation (here a division) is between two integers. So while the division of 144 by 314 is 0.45~~~, Python converts this to integer and returns just the 0 by eliminating all numbers after the decimal point.
你得到0的原因是，如果数学运算（这里是一个除法）在两个整数之间，Python 2会返回一个整数。因此，当144乘314的除法为0.45 ~~~时，Python将其转换为整数，并通过消除小数点后的所有数字返回0。
Alternatively you can convert one of the numbers in any operation to a float since an operation between a float and an integer would return a float. In your case you could write float(144)/314 or 144/float(314). Another, less generic code, is to say 144.0/314. Here 144.0 is a float so it’s the same thing.
或者，您可以将任何操作中的一个数字转换为浮点数，因为浮点数和整数之间的操作将返回一个浮点数。在你的情况下，你可以写float（144）/ 314或144 / float（314）。另一个不太通用的代码是144.0 / 314。 144.0这是一个浮点数，所以它是一样的。
#3
3
You can just multiply 1.0
你可以乘以1.0
>>> 1.0*144/314
0.4585987261146497
#4
2
In Python 3 this is the default behavior, but if you aren't using that you can import division like so:
在Python 3中，这是默认行为，但如果您不使用它，则可以像这样导入分区：
>>> from __future__ import division
>>> 144/314
0.4585987261146497
Alternatively you can cast one of the variables to a float when doing your division which will do the same thing
或者，您可以在执行分割时将其中一个变量强制转换为浮点数，这将执行相同的操作
sum = 144
women_onboard = 314
proportion_womenclass3_survived = sum / float(np.size(women_onboard))