打开时“rU”不识别终点线

R - Z binning n. 1 "1 " , generalized particle n. 223 R coordinate: from 0.0000E+00 to 1.1000E+02 cm, 110 bins ( 1.0000E+00 cm wide) Z coordinate: from -2.9000E+02 to 2.9000E+02 cm, 290 bins ( 2.0000E+00 cm wide) axis coordinates: X = 0.0000E+00, Y = 0.0000E+00 cm Data follow in a matrix A(ir,iz), format (1(5x,1p,10(1x,e11.4))) accurate deposition along the tracks requested this is a track-length binning 3.0406E-01 2.3565E-02 1.0664E-02 7.2081E-03 5.2534E-03 4.8756E-03 4.5011E-03 4.2792E-03 4.1801E-03 3.9648E-03 3.9108E-03 3.8301E-03 3.7256E-03 3.6330E-03 3.5912E-03 3.5461E-03 3.4579E-03 3.4813E-03 3.4395E-03 3.3868E-03 And so on for 6000 lines...

3条回答

网友

1楼 · 编辑于 2024-05-28 23:39:01

您可以使用Python的with statement，而不是使用readlines，如下所示：

contents=[]
with open(file_name,'rU') as fin:
    for i,line in enumerate(fin):
        if i>9:
            contents.append(line.rstrip('\n'))

或者，更简洁地说：

^{pr2}$

使用with并在文件上打开是一个首选的习惯用法，因为它具有自动关闭和更优雅的错误收集功能。

可以使用enumerate跟踪文件中要跳过或保留的行。

网友

2楼 · 编辑于 2024-05-28 23:39:01

这一切如预期。从docs：

readlines: Read until EOF using readline() and return a list containing the lines thus read. If the optional sizehint argument is present, instead of reading up to EOF, whole lines totalling approximately sizehint bytes (possibly after rounding up to an internal buffer size) are read. Objects implementing a file-like interface may choose to ignore sizehint if it cannot be implemented, or cannot be implemented efficiently.
readline: Read one entire line from the file. A trailing newline character is kept in the string (but may be absent when a file ends with an incomplete line).

如果您不需要尾随行，每行的strip将删除它。

如果你只想跳过一些开场白，有很多方法可以做到。我个人偏爱itertools.islice：

for line in itertools.islice(infile, 9, None):
    print line

网友

3楼 · 编辑于 2024-05-28 23:39:01

我不确定readlines是否指定要删除换行符，只是它们被用作分隔符。

但是，您可以很容易地解决此问题：

lines = [line.strip() for line in file.readlines()]

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