Question

我有一个数字列表，我想将它们一起加入或写入文本文件，并将数字的总和放在文件中。

[0.297, 0.344, 0.342, 0.285, 0.333, 0.337, 0.309, 0.334, 0.337, 0.289, 0.342, 0.337, 0.292, 0.337, 0.347, 0.31, 0.335, 0.34, 0.279, 0.331, 0.336, 0.298, 0.338, 0.347, 5.357, 0.342, 0.314, 0.289, 0.358, 0.341, 0.321, 0.336, 0.347, 0.3, 0.336, 0.333, 0.279, 0.334, 0.339, 0.303, 0.335, 0.337, 0.301, 0.329, 0.337, 0.289, 0.335, 0.341, 0.305, 0.332, 0.347, 0.307, 0.332, 0.344, 0.291, 0.334, 0.333, 0.347, 0.345, 0.342, 0.297, 0.338, 0.35, 0.329, 0.336, 0.345, 0.309, 0.344, 0.344, 0.288, 0.332, 0.341, 0.311, 0.343, 0.344, 0.319, 0.332, 0.335, 0.297, 0.337, 0.344, 0.297, 0.334, 0.341, 0.306, 0.332, 0.335, 0.299, 0.332, 0.344, 0.286, 0.332, 0.344, 5.362, 0.348, 0.318, 0.296, 0.345, 0.338, 0.305, 0.343, 0.343, 0.297, 0.332, 0.331, 0.296, 0.334, 0.336, 0.305, 0.341, 0.346, 0.286, 0.337, 0.334, 0.306, 0.342, 0.342, 0.305, 0.332, 0.335, 0.285, 0.331, 0.335, 0.285, 0.334, 0.343, 0.308, 0.333, 0.341, 0.286, 0.338, 0.336, 0.306, 0.342, 0.335, 0.305, 0.342, 0.332, 0.296, 0.332, 0.342, 0.296, 0.342, 0.336, 0.307, 0.343, 0.347, 0.313, 0.328, 0.344, 0.313, 0.338, 0.334, 0.299, 0.337, 0.35, 0.292, 0.348, 0.341, 0.289, 0.335, 0.339, 5.366, 0.358, 0.343, 0.3, 0.338, 0.341, 0.306, 0.343, 0.345, 0.296, 0.332, 0.352, 0.296, 0.333, 0.346, 0.306, 0.342]

我希望它们在一行上，并将总和放在行的顶部，如

sum = 2223.2
numbers are 
0.322
0.223
0.312

我尝试加入浮动，但我有错误

blut = '\n'.join(float(diffs))
open('ext.txt', 'w').write(blut)

Answer 1

您可以先将diff中的所有数字转换为字符串，然后将其加入\n：

output = list(map(str, diffs))
blut = '\n'.join(output)

额外list()适用于Python 3.X，在Python 2.7中是多余的。这假定您的初始列表名为diffs。

有更多方法可以创建目标输出文件。例如，您可以使用join一次性写入总和，文本和数字，

with open('ext.txt', 'w') as fout:
    fout.write(''.join(['sum = ', str(sum(diffs)), '\nnumbers are\n', blut]))

此处，sum也直接在输入列表中计算为join并转换为字符串。 blut已经是字符串列表。 join使用空字符串作为分隔符，因为输入列表中包含所有必需的空格和换行符。

另一种方法是分割写作并首先添加总和，然后是文本，然后是数字。在这种情况下，您需要在第一次写入后更改w以附加a。

Answer 2

l = [0.297, 0.344, 0.342, 0.285, 0.333, 0.337, 0.309, 0.334, 0.337, 0.289, 0.342, 0.337, 0.292, 0.337, 0.347, 0.31, 0.335, 0.34, 0.279, 0.331, 0.336, 0.298, 0.338, 0.347, 5.357, 0.342, 0.314, 0.289, 0.358, 0.341, 0.321, 0.336, 0.347, 0.3, 0.336, 0.333, 0.279, 0.334, 0.339, 0.303, 0.335, 0.337, 0.301, 0.329, 0.337, 0.289, 0.335, 0.341, 0.305, 0.332, 0.347, 0.307, 0.332, 0.344, 0.291, 0.334, 0.333, 0.347, 0.345, 0.342, 0.297, 0.338, 0.35, 0.329, 0.336, 0.345, 0.309, 0.344, 0.344, 0.288, 0.332, 0.341, 0.311, 0.343, 0.344, 0.319, 0.332, 0.335, 0.297, 0.337, 0.344, 0.297, 0.334, 0.341, 0.306, 0.332, 0.335, 0.299, 0.332, 0.344, 0.286, 0.332, 0.344, 5.362, 0.348, 0.318, 0.296, 0.345, 0.338, 0.305, 0.343, 0.343, 0.297, 0.332, 0.331, 0.296, 0.334, 0.336, 0.305, 0.341, 0.346, 0.286, 0.337, 0.334, 0.306, 0.342, 0.342, 0.305, 0.332, 0.335, 0.285, 0.331, 0.335, 0.285, 0.334, 0.343, 0.308, 0.333, 0.341, 0.286, 0.338, 0.336, 0.306, 0.342, 0.335, 0.305, 0.342, 0.332, 0.296, 0.332, 0.342, 0.296, 0.342, 0.336, 0.307, 0.343, 0.347, 0.313, 0.328, 0.344, 0.313, 0.338, 0.334, 0.299, 0.337, 0.35, 0.292, 0.348, 0.341, 0.289, 0.335, 0.339, 5.366, 0.358, 0.343, 0.3, 0.338, 0.341, 0.306, 0.343, 0.345, 0.296, 0.332, 0.352, 0.296, 0.333, 0.346, 0.306, 0.342]

with open("file.txt", "w+") as f:
    s = sum(l)
    f.write("sum = {}\n".format(s))
    f.write("\n".join(map(str, l)))

将数字连接成一个文件

2 个答案: