使用python,我将数据存储在列表中:
a = [['a', 'b', 'c'], [1, 2, 3, 4], [5, 6, 7, 8], [9, 10, 11, 12]]
我想将此列表写入csv,如下所示:
a, 1, 2, 3, 4
b, 5, 6, 7, 8
c, 9, 10, 11, 12
这是我在阅读了许多其他转置问题后想出的代码:
length = len(a[0])
with open('test.csv', 'w') as test_file:
file_writer = csv.writer(test_file)
for i in range(length):
file_writer.writerow([x[i] for x in a])
这给了我:
a,1,5,9
b,2,6,10
c,3,7,11
所以它转换了整个列表(更不用说某些值甚至会丢失),但如上所示,我只希望第一行被转置。我只是不知道从哪里开始。
感谢Nf4r,我想出了以下内容 - 可能看起来很尴尬,但有效: - )
a = [['a', 'b', 'c'], [1, 2, 3, 4], [5, 6, 7, 8], [9, 10, 11, 12]]
f = open('test.csv', 'a')
for header, data in zip(a[0], a[1:]):
result = "{header}, {data}".format(header = header,
data = ', '.join((str(n) for n in data)))
f.write(result)
f.write('\n')
f.close()
答案 0 :(得分:0)
可能是这样的:
a = [['a', 'b', 'c'], [1, 2, 3, 4], [5, 6, 7, 8], [9, 10, 11, 12]]
for header, data in zip(a[0], a[1:]):
result = "{header}, {data}".format(header= header,
data= ', '.join((str(n) for n in data)))
print(result)
a, 1, 2, 3, 4
b, 5, 6, 7, 8
c, 9, 10, 11, 12
<do what u want with it>
答案 1 :(得分:0)
您需要拉出第一个子列表和 zip ,其余部分在合并到一个列表后使用 writerows :
a = [['a', 'b', 'c'], [1, 2, 3, 4], [5, 6, 7, 8], [9, 10, 11, 12]]
import csv
with open('test.csv', 'w') as test_file:
file_writer = csv.writer(test_file)
it = iter(a)
col_1 = next(it)
file_writer.writerows([a] + b for a,b in zip(col_1, it))