Question

我有一个输入，我知道它有用，我希望能够替换字符串中的某些文本，但我需要解决它区分大小写。我试图将与“查找”变量匹配的任何内容小写，但我需要最好的方法。

# Replace Item Code Filter based on ColorArmor Filter by SethBling
# First Edit by Howzieky_10, correction and bug fixing by medi4

from pymclevel import MCSchematic
from pymclevel import TileEntity
from pymclevel import TAG_Compound
from pymclevel import TAG_Short
from pymclevel import TAG_Byte
from pymclevel import TAG_String
from pymclevel import TAG_Int
from pymclevel import TAG_List
from numpy import zeros


displayName = "Replace Command Block Text"

inputs = (
    ("Find", "string"),
    ("Replace", "string"),
    ("How many times?","string"),
)

def perform(level, box, options):
  find = options["Find"]
  replace = options["Replace"]
  count = options["How many times?"]

  for (chunk, slices, point) in level.getChunkSlices(box):
    for te in chunk.TileEntities:
        px = te["x"].value
        py = te["y"].value
        pz = te["z"].value
        if px < box.minx or px >= box.maxx:
            continue
        if py < box.miny or py >= box.maxy:
            continue
        if pz < box.minz or pz >= box.maxz:
            continue

        if te["id"].value == "Control":
            command = te["Command"].value
            print find
            print command


            command = command.replace(find, replace)
            te["Command"] = TAG_String(command)
            print te["Command"].value
            chunk.dirty = True

Answer 1

这样的东西？

这只是在字符串'aBc'中找到'ABCaBcabcAbC'的小写字母。

>>> s = 'ABCaBcabcAbC'
>>> find = 'aBc'
>>> s.replace(find, find.lower())
'ABCabcabcAbC'

使用正则表达式：

>>> import re
>>> re.sub(r'{}'.format(re.escape(find)), lambda m:m.group().lower(), s)
'ABCabcabcAbC'

如果您正在寻找确切的字词，请使用此正则表达式\b{}\b.format(find)。

Answer 2

在查找时，只需小写整个字符串：

inputstring.lower().find(your_search_text.lower())

现在，您通过整个输入字符串不区分大小写。

inputstring本身引用的值未更改，str.lower()返回 new 字符串对象，其中所有字符均为小写：

>>> inputstring = 'Hello World!'
>>> inputstring.lower().find('hello')
0
>>> inputstring.lower().find('world')
6
>>> inputstring
'Hello World!'

如何在python字符串中小写某个单词？ python版本3

2 个答案: