将浮点数列表转换为逗号分隔的字符串 | Python

Question

Given a list of floats :

my_list = [0.3, 0.11, -0.9]

I want a string literal object:

my_string = "0.3, 0.11, -0.9"

---

Attempt:

print(', '.join(inputs))
> TypeError: sequence item 0: expected str instance, float found

Answer 1

The compact way:

l = [0.3, 0.11, -0.9]

print (str(l)[1:-1])

Output:

0.3, 0.11, -0.9

Still, to be used with caution:). The "regular" way would be:

print (', '.join([str(x) for x in l]))

Answer 2

Try this:

print(' , '.join(str(x) for x in [0.3, 0.11, -0.9]))

Answer 3

Arguably, the easiest way would be to do:

my_string = str(my_list)[1:-1]

This takes my_list , converts it into a string, and takes the characters from 1)leaving the first character at 0) to -1 (the end character is not taken)

Answer 4

A more pythonic way is to use map to first convert all the float values to str , and then use the function join to concatenate into a string.

print(', '.join(map(str, my_list)))

This prints 0.3, 0.11, -0.9 when my_list = [0.3, 0.11, -0.9]

Answer 5

you can use join function of string like this:

first you have to convert float to str

my_string = ', '.join([str(i) for i in my_list])