Python—格式化ascii表的数字
我想知道为什么我的代码不起作用。我想用小数点后的两个数字对两列数据进行四舍五入。我现在遵循以下代码:Python—格式化ascii表的数字,python,python-3.x,formatting,numbers,text-files,Python,Python 3.x,Formatting,Numbers,Text Files,我想知道为什么我的代码不起作用。我想用小数点后的两个数字对两列数据进行四舍五入。我现在遵循以下代码: 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
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)
输入数据如下所示
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
...
...
我认为这条线错了
print("{:.2f\t}".format(vx),"{:.2f}".format(vy), file=outfile)
选项卡应该在{}
之外,我会这样重写它
print("{:.2f}\t{:.2f}".format(vx, vy), file=outfile)
我认为这条线错了
print("{:.2f\t}".format(vx),"{:.2f}".format(vy), file=outfile)
选项卡应该在{}
之外,我会这样重写它
print("{:.2f}\t{:.2f}".format(vx, vy), file=outfile)