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Created on 2021-04-20 21:55 by alvarezdqal, last changed 2022-04-11 14:59 by admin. This issue is now closed.
| Messages (3) | |||
|---|---|---|---|
| msg391480 - (view) | Author: David Alvarez Lombardi (alvarezdqal) | Date: 2021-04-20 21:55 | |
As of now the best way to filter a str is to convert to list, filter, then join back to a str. I think a a string comprehension would be very useful for this.
So to get only ascii_lower case chars given this string,
````
s = "a1b2c3d4"
````
I could do this
````
filtered_s = c"ch for ch in s if ch in string.ascii_lowercase"
````
instead of this.
````
s_list = []
for i in range(len(s)):
if s[i] in string.ascii_lowercase:
s_list.append(s[i])
filtered_s = "".join(s_list)
````
|
|||
| msg391481 - (view) | Author: Zachary Ware (zach.ware) *  |
Date: 2021-04-20 22:07 | |
filtered_s = ''.join(c for c in s if c in string.ascii_lowercase) |
|||
| msg391482 - (view) | Author: Raymond Hettinger (rhettinger) * |
Date: 2021-04-20 22:34 | |
Please take this to the python-ideas mailing list: https://mail.python.org/mailman3/lists/python-ideas.python.org/ If the idea gains traction, it would likely require a PEP and then this issue can be reopened. |
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| History | |||
|---|---|---|---|
| Date | User | Action | Args |
| 2022-04-11 14:59:44 | admin | set | github: 88066 |
| 2021-04-20 22:34:59 | rhettinger | set | status: open -> closed nosy: + rhettinger messages: + msg391482 resolution: later stage: resolved |
| 2021-04-20 22:07:52 | zach.ware | set | nosy:
+ zach.ware messages: + msg391481 |
| 2021-04-20 21:55:08 | alvarezdqal | create | |