[英]Append next word into a list from a text file in python and print it columnwise
[英]Search a text file for a word then print the next word from text file?
我一直在尋找這種語法的時間,但是它必須如此簡單,沒人會覺得需要在任何地方編寫它。 請幫忙
基本文件讀取:
ifs = open('myfile', 'r')
for line in ifs:
# do your stuff
當然,您必須處理'word'不在文件中或在文件的最后一行的特殊情況。
如果文本文件很小,則可以執行以下操作:
with open('myfile', 'r') as f:
f = f.read().splitlines() # no trailing '\n' character as opposed to readlines
ind = f.index('word')
if ind < len(f) - 1:
print(f[ind+1])
如果文本文件很大,您可以這樣逐行閱讀:
with open('myfile', 'r') as f:
for line in f:
if line.strip() == 'word':
try:
print(next(f))
except StopIteration:
pass
break
這是一種實現方法:
with open('input') as in_file:
for line in in_file:
if line.strip().lower() == 'word':
line = next(in_file)
print line.strip()
上面的代碼在一個輸入文件上為:
word
hello
how
are
you
word
nadal
印刷品:
hello
nadal
希望能幫助到你
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