使用列表理解从文本中过滤掉数字

Question

我有一个带有货币值的小文本。我只想在列表中保存没有货币符号的值。到目前为止，这是我的工作示例

Text = "Out of an estimated  million budget,  million is channeled to program XX,  million to program YY and the remainder to program ZZ"

amount = [x for x in Text.split() if x.startswith('$')]

当前代码保存值（带货币符号）。我如何去掉美元符号的值？

Answer 1

使用正则表达式：

import re

re.findall(r"$(\d+)", s)

Answer 2

试试这个

Text = "Out of an estimated  million budget,  million is channeled to program XX,  million to program YY and the remainder to program ZZ"
# slice $ sign off of each string
amount = [x[1:] for x in Text.split() if x.startswith('$')]
amount
['5', '3', '1']

Answer 3

使用它从列表中删除第一个字符

amount = [x[1:] for x in Text.split() if x.startswith('$')]

Answer 4

amount = [x.replace('$','') for x in Text.split() if x.startswith('$')]

使用列表理解从文本中过滤掉数字

Filter out numbers from text using list comprehension

python

list-comprehension