Python中的字母范围
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Alphabet range in Python
提问by Alexa Elis
Instead of making a list of alphabet characters like this:
而不是像这样制作字母字符列表:
alpha = ['a', 'b', 'c', 'd'.........'z']
is there any way that we can group it to a range or something? For example, for numbers it can be grouped using range():
有什么方法可以将它分组到一个范围或其他东西?例如,对于数字,可以使用range()以下方法对其进行分组:
range(1, 10)
采纳答案by jamylak
>>> import string
>>> string.ascii_lowercase
'abcdefghijklmnopqrstuvwxyz'
If you really need a list:
如果你真的需要一个列表:
>>> list(string.ascii_lowercase)
['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']
And to do it with range
并用它来做 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 stringmodule features:
其他有用的string模块功能:
>>> help(string) # on Python 3
....
DATA
ascii_letters = 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ'
ascii_lowercase = 'abcdefghijklmnopqrstuvwxyz'
ascii_uppercase = 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'
digits = '0123456789'
hexdigits = '0123456789abcdefABCDEF'
octdigits = '01234567'
printable = '0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ!"#$%&\'()*+,-./:;<=>?@[\]^_`{|}~ \t\n\r\x0b\x0c'
punctuation = '!"#$%&\'()*+,-./:;<=>?@[\]^_`{|}~'
whitespace = ' \t\n\r\x0b\x0c'
回答by Trinh Nguyen
In Python 2.7 and 3 you can use this:
在 Python 2.7 和 3 中,你可以使用这个:
import string
string.ascii_lowercase
'abcdefghijklmnopqrstuvwxyz'
string.ascii_uppercase
'ABCDEFGHIJKLMNOPQRSTUVWXYZ'
As @Zaz says:
string.lowercaseis deprecated and no longer works in Python 3 but string.ascii_lowercaseworks in both
正如@Zaz 所说:
string.lowercase已弃用,不再适用于 Python 3,但string.ascii_lowercase适用于两者
回答by Bg1850
[chr(i) for i in range(ord('a'),ord('z')+1)]
回答by pylang
Here is a simple letter-range implementation:
这是一个简单的字母范围实现:
Code
代码
def letter_range(start, stop="{", step=1):
"""Yield a range of lowercase letters."""
for ord_ in range(ord(start.lower()), ord(stop.lower()), step):
yield chr(ord_)
Demo
演示
list(letter_range("a", "f"))
# ['a', 'b', 'c', 'd', 'e']
list(letter_range("a", "f", step=2))
# ['a', 'c', 'e']
回答by Qaswed
If you are looking to an equivalent of letters[1:10]from R, you can use:
如果您正在寻找等效letters[1:10]于 R 的内容,您可以使用:
import string
list(string.ascii_lowercase[0:10])
回答by lakshmikandan
Print the Upper and Lower case alphabets in python using a built-in range function
使用内置范围函数在python中打印大写和小写字母
def upperCaseAlphabets():
print("Upper Case Alphabets")
for i in range(65, 91):
print(chr(i), end=" ")
print()
def lowerCaseAlphabets():
print("Lower Case Alphabets")
for i in range(97, 123):
print(chr(i), end=" ")
upperCaseAlphabets();
lowerCaseAlphabets();
回答by RicarHincapie
This is the easiest way I can figure out:
这是我能弄清楚的最简单的方法:
#!/usr/bin/python3
for i in range(97, 123):
print("{:c}".format(i), end='')
#!/usr/bin/python3
for i in range(97, 123):
print("{:c}".format(i), end='')
So, 97 to 122 are the ASCII number equivalent to 'a' to and 'z'. Notice the lowercase and the need to put 123, since it will not be included).
因此,97 到 122 是等效于 'a' to 和 'z' 的 ASCII 数字。注意小写和需要输入 123,因为它不会被包括在内)。
In print function make sure to set the {:c}(character) format, and, in this case, we want it to print it all together not even letting a new line at the end, so end=''would do the job.
在打印功能中确保设置{:c}(字符)格式,在这种情况下,我们希望它一起打印,甚至不让末尾换行,这样end=''就可以了。
The result is this:
abcdefghijklmnopqrstuvwxyz
结果是这样的:
abcdefghijklmnopqrstuvwxyz

