Question

我有一个VRML文件，其中一部分是这样的：

color Color { color [
 .566 .566 1
 .629 .629 1
 .066 .066 1
 .129 .129 1
 .691 .691 1
 .754 .754 1
 .816 .816 1
 .504 .504 1
 .441 .441 1
 .191 .191 1
 1 .879 .879
 .254 .254 1
 1 .754 .754
 1 1 1
 .879 .879 1
 1 .816 .816
 .379 .379 1
 .316 .316 1
 1 .504 .504
 1 .691 .691
 1 .191 .191
 1 .566 .566
 1 .629 .629
 1 .441 .441
 1 .379 .379
 1 .066 .066
 1 .129 .129
 1 0 0
 1 .316 .316
 0 0 1
 1 .254 .254
  ] }

我在线阅读，并把它放在一个名为'line'的字符串中。

如何从一条线上提取三个花车？谢谢。

Answer 1

你可以从包含三个＆＃34; float-able＆＃34;的那些行中获取浮点数。字符串使用：

line_floats = [float(field) for field in line.split.()]

或您可以执行的整个文件：

def is_three_floats(line):
    fields = line.split()
    if len(fields) != 3: return False
    try:
        line_floats = [float(field) for field in fields]
    except ValueError:
       return False
    return line_floats

float_lines = [is_three_floats(line) for line in fp if is_three_floats(line)]

Python：如何从行

1 个答案: