![](/img/trans.png)
[英]how to read a specific line and print a specific position in this line using python
[英]How read specific positions strings and if they match, then print all the line in python?
我正在學習蟒蛇。 我想做這個:
我有一個文本文件,有很多這樣的行(每行有 26 個字符串,有些字符串可以是空格,也可以不是空格,后面是行數):
BBBTHTHTTTTCCCHHHHHH 1
CCCTTTTHHHHHHHHHHHTTTTTTTT 2
TTTTTTTTTTHHHHHHHHCCCCCC 3
CTCTTTTTTTTTTTTTTHHHHHHHHH 4
我想從 22 到 26 位置讀取字符串,如果所有這些位置都是 H,則打印完整行。 例如:
BBBTHTHTTTTCCCHHHHHH 1
CTCTTTTTTTTTTTTTTHHHHHHHHH 4
我的腳本是這樣的
f = open("file.txt", "r")
lines = [line for line in f.readlines() if line[22:26]=="H"]
print lines
有人可以幫我解決嗎? 感謝您的支持和提示。
嘗試這個:
with open('file.txt') as f:
for i in f:
if i[21:26]=='HHHHH':
print(i)
您可以使用split()
和endswith()
res = [line for line in f if line.split()[0].endswith('H' * (26 - 21))]
print(res)
輸出:
[' BBBTHTHTTTTCCCHHHHHH 1', 'CTCTTTTTTTTTTTTTTHHHHHHHHH 4']
有可能 :
with open('file.txt') as f:
lines = '\n'.join([l for l in f.read().splitlines() if l[22:26] == 'HHHH'])
print(lines)
聲明:本站的技術帖子網頁,遵循CC BY-SA 4.0協議,如果您需要轉載,請注明本站網址或者原文地址。任何問題請咨詢:yoyou2525@163.com.