大约有 43,100 项符合查询结果（耗时：0.0359秒） [XML]
Is there a Python Library that contains a list of all the ascii characters?
...
Here it is:
[chr(i) for i in xrange(127)]
share
|
improve this answer
|
follow
|
...
Python: how to print range a-z?
...guages as well? Thanks & Best Regards
– Michael Schroter
Apr 13 at 6:17
add a comment
|
...
read.csv warning 'EOF within quoted string' prevents complete reading of file
...it)
## 'data.frame': 112543 obs. of 13 variables:
## $ row.names : chr "10.2307/675394" "10.2307/30007362" "10.2307/4254931" "10.2307/20537934" ...
## $ id : chr "10.2307/675394\t" "10.2307/30007362\t" "10.2307/4254931\t" "10.2307/20537934\t" ...
## $ doi : chr "Archa...
For each row return the column name of the largest value
...max(cnt))
# A tibble: 3 x 3
# Groups: id [3]
id dept cnt
<chr> <chr> <dbl>
1 1 V3 9.
2 2 V1 8.
3 3 V2 5.
# If you're worried about keeping ties:
df %>%
rownames_to_column('id') %>%
gather(dept, cnt, V1:V3) %>%
group_by(...
How to convert a data frame column to numeric type?
...MBOL EX PRICE SIZE COND BID BIDSIZ OFR
#> <chr> <chr> <chr> <chr> <chr> <chr> <chr> <chr> <chr>
#> 1 2012-05-04 09:30:00 BAC T 7.8900 38538 F 7.89 523 7.90
#> 2 2012-05-04 09:30:01 BAC ...
Alphabet range in Python
... 'v', 'w', 'x', 'y', 'z']
And to do it with range
>>> list(map(chr, range(97, 123))) #or list(map(chr, range(ord('a'), ord('z')+1)))
['a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z']
Other helpful string m...
Remove an entire column from a data.frame in R
...
You can set it to NULL.
> Data$genome <- NULL
> head(Data)
chr region
1 chr1 CDS
2 chr1 exon
3 chr1 CDS
4 chr1 exon
5 chr1 CDS
6 chr1 exon
As pointed out in the comments, here are some other possibilities:
Data[2] <- NULL # Wojciech Sobala
Data[[2]] <- NULL...
How to get the ASCII value of a character
... case you want to
convert back after playing with the
number, function chr() does the trick.
>>> ord('a')
97
>>> chr(97)
'a'
>>> chr(ord('a') + 3)
'd'
>>>
In Python 2, there is also the unichr function, returning the Unicode character whose ordinal is the ...
How to convert an int to a hex string?
...
You are looking for the chr function.
You seem to be mixing decimal representations of integers and hex representations of integers, so it's not entirely clear what you need. Based on the description you gave, I think one of these snippets shows wh...
Password masking console application
...
var pass = new Stack<char>();
char chr = (char)0;
while ((chr = System.Console.ReadKey(true).KeyChar) != ENTER)
{
if (chr == BACKSP)
{
if (pass.Count > 0)
...