我正在尝试使用 “ python get_timestamp.py -f gsham_input.xvg -1 -0.1348 -2 -0.1109”

运行以下python 。但是，似乎python错误地将小数点前的减号加了破折号，并显示了以下错误：“ file”

get_timestamp.py“，第21行，在value1 =

float(arg)ValueError中：float()的无效文字：−0.1348“您能帮助我知道如何解决吗？

谢谢。

#!/usr/bin/env python

"""

Given two values, looks in a 3 column-file (output of sham.pl)

which time frame matches closest.

"""

import sys

USAGE = "USAGE: get_timestamp.py -f -1 -2 \n"

# Parse arguments

read_input, read_value1, read_value2 = False, False, False

input_file, value1, value2 = None, None, None

for arg in sys.argv[1:]:

if read_input:

read_input = False

input_file = arg

elif read_value1:

read_value1 = False

value1 = float(arg)

elif read_value2:

read_value2 = False

value2 = float(arg)

if arg[0] == "-":

if arg == "-f":

read_input = True

continue

elif arg == "-1":

read_value1 = True

continue

elif arg == "-2":

read_value2 = True

else:

print USAGE

sys.stderr.write('ERROR: Option not recognized: %s\n' %arg)

sys.exit(1)

if not input_file:

print USAGE

sys.stderr.write('ERROR: You forgot to provide an input file.\n')

sys.exit(1)

# Open sham output

x_values, y_values, time_values = [], [], []

fhandle = open(input_file)

for line in fhandle:

if line[0] != "#" and len(line.split()) == 3:

t,x,y = line.split()

x_values.append(float(x))

y_values.append(float(y))

time_values.append(float(t))

fhandle.close()

def find_common_frame(min_x, min_y):

for xval in min_x:

xframe = xval[0]

for yval in min_y:

yframe = yval[0]

if xframe == yframe:

return (xframe, xval[1], yval[1])

return (None, None, None)

# If you cannot find anything, try increasing the nval variable

nval = 50

min_x = sorted(enumerate(x_values), key=lambda x: abs(x[1]-value1))[:nval]

min_y = sorted(enumerate(y_values), key=lambda x: abs(x[1]-value2))[:nval]

frame, x, y = find_common_frame(min_x, min_y)

if not frame:

print "No timestamp found.."

sys.exit(0)

print "## T = %s (%s, %s)" %(time_values[frame], x, y)