我将 csv 文件转换为文本文件，我想在文本文件中添加数字。当我运行我的代码时出现错误。假设错误代码我想编写逻辑来绕过我的字符串并仅添加数值。
`import csv
csv_file = 'Annual Budget.csv'
txt_file = 'annual_budget.txt'
with open(txt_file, 'w') as my_output_file:
with open(csv_file, 'r') as my_input_file:
reader = csv.reader(my_input_file)
for row in reader:
my_output_file.write(" ".join(row)+'\n')
data = []
with open(r'annual_budget.txt') as f:
for line in f:
fields = line.split()
rowdata = map(float, fields)
data.extend(rowdata)
print(sum(data)/len(data)
输出（错误）：data.extend(rowdata)
ValueError: could not convert string to float Value: 'ANNUAL'
这是我的文本文件的内容：
ANNUAL BUDGET Q2 Q4
100 450 20
600 765 50
500 380 79
800 480 455
1100 65 4320
修改您的代码如下：
with open(r'annual_budget.txt', 'r') as f:
reader = csv.reader(f)
headers = reader.next() # this will yield first row i.e columns if python 3: Use next(reader) instead of reader.next()
for line in reader:
rowdata = map(float, line)
data.extend(rowdata)
print(sum(data)/len(data))
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