我想知道为什么我的代码不起作用。我想在小数点后用2个数字舍入两列数据。我现在正在关注以下代码:
from __future__ import print_function
with open('input.dat', 'r') as f, open('output.txt', 'w') as outfile:
for line in f:
try:
line = line.strip()
columns = line.split()
vx = float(columns[0])
vy = float(columns[1])
print("{:.2f\t}".format(vx),"{:.2f}".format(vy), file=outfile)
except ValueError:
print(line, file=outfile)
输入数据如下
XY
HH
M&M
TS
1.83746 2.12131
1.12121 1.89942
1.32435 1.99443
1.65392 2.00001
1.48732 2.21773
...
...
输出应如下所示:
XY
HH
M&M
TS
1.84 2.12
1.12 1.90
1.32 1.99
1.65 2.00
1.49 2.22
...
...
答案 0 :(得分:3)
我认为这一行是错误的
print("{:.2f\t}".format(vx),"{:.2f}".format(vy), file=outfile)
标签应该在{}
之外,我会像这样重写它
print("{:.2f}\t{:.2f}".format(vx, vy), file=outfile)