将字符串列表附加到一行中的文件？-python

有没有一种方法可以在python代码行中将行列表附加到文件中？我一直在这样做：

lines = ['this is the foo bar line to append','this is the second line', 'whatever third line']

for l in lines:
  print>>open(infile,'a'), l

你可以这样做：

lines = ['this is the foo bar line to append','this is the second line', 'whatever third line']

with open('file.txt', 'w') as fd:
    fd.write('\n'.join(lines))

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不必每次写入都重新打开文件，您可以

lines = ['this is the foo bar line to append','this is the second line', 'whatever third line']

out = open('filename','a')
for l in lines:
  out.write(l)

这将把它们分别写在新的一行上。如果你想把它们放在一条线上，你可以

lines = ['this is the foo bar line to append','this is the second line', 'whatever third line']

out = open('filename','a')
for l in lines:
  longline = longline + l
out.write(longline)

您可能还需要添加一个空格，如“longline=longline+''+l”中所示

两行：

lines = [ ... ]

with open('sometextfile', 'a') as outfile:
    outfile.write('\n'.join(lines) + '\n')

我们在尾随换行符的末尾添加

\n

一行：

lines = [ ... ]
open('sometextfile', 'a').write('\n'.join(lines) + '\n')

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不过，我还是赞成第一种方法。

@2er0如果您需要附加yes（即，如果文件中已经有内容），但是使用此解决方案，您可以一次写入整个缓冲区，所以这无关紧要。似乎这是最接近一行的方法。