Question

我正在编写一个程序，它从文件中找到某种类型的行，并在其中查找数字并计算它们的平均值。

这是：

total = 0    
count = 0

fname = raw_input("Enter file name: ")    
fh = open(fname)

for line in fh:    
    if line.startswith('X-DSPAM-Confidence:'):

        count = float(count) + 1    
        x = fh[22:29]

        total = float(total) + float(x)

    else: 
        continue

print total/count

我明白了：

TypeError: '<Invalid Type>' does not support indexing on line 8.

Answer 1

我会继续发表评论。

您的代码（仅限于您的问题）是：

Function CountRed(range_data As Range) As Long
Application.Volatile
Dim datax As Range
For Each datax In range_data
    If datax.Interior.Color = vbRed Then
        CountRed = CountRed + 1
    End If
Next datax
End Function

fh = open(fname) for line in fh: x = fh[22:29]实际上是一个fh对象，它不支持切片语法。如果你想从线上检索信息，你必须在线实际执行操作。

file

Answer 2

你正在查看文件，而不是行。此外，您应该简化代码。

total = 0.0
count = 0.0
# Headers look like this:
# X-DSPAM-Confidence: 0.9928
dspam_header = 'X-DSPAM-Confidence:'
fname = raw_input("Enter file name: ")
with open(fname) as fh:
    for line in fh:
        if not line.startswith(dspam_header):
            continue

        count += 1
        total += float(line[len(dspam_header):])

if count:
    print total/count

python类型错误：无效类型不支持索引

2 个答案: