我有两个问题。最后,我尝试使用$""
搜索regex
中包含的任何字符串,然后将其替换为字典中的值。这就是我所拥有的:
import re
# Dictionary to use to replace with later
myDict = {'hand_R_item':'hand_R_node', 'hand_L_item':'hand_L_node', 'hips_item':'hips_node', 'body_item':'body_node'}
# String to process
command = '''objs = [$"hand_R_item", $"hand_L_item", $"hips_item"]
for obj in objs:
cmds.select(add = True)
cmds.parent(obj, $"body_item")
'''
# Find all instances of anything matching $""
regex = re.compile(r'\$\"[\w]*?\"')
allMatches = re.findall(regex, command)
# Replace matches with values from dict
newCommand = command
for match in allMatches:
newCommand = newCommand.replace(match, myDict.get(match[2:-1], '') )
print newCommand
这将输出以下内容,这是想要的:
'objs = [hand_R_node, hand_L_node, hips_node]
for obj in objs:
cmds.select(add = True)
cmds.parent(obj, body_node)'
我的问题主要是看我是否以正确的方式接近这个:
r'\$\"[\w]*?\"'
是最好用的模式吗?我对正则表达式不太熟悉,所以我不知道我是否错过任何陷阱!答案 0 :(得分:1)
您可以在这里直接使用re.sub
。此外,在你的正则表达式中,你不需要逃避引号。 \w
可以在角色类之外:
>>> d = {'hand_R_item':'hand_R_node', 'hand_L_item':'hand_L_node', 'hips_item':'hips_node', 'body_item':'body_node'}
>>> reg = re.compile(r'\$"(\w*?)"')
>>> command = '''objs = [$"hand_R_item", $"hand_L_item", $"hips_item"]
... for obj in objs:
... cmds.select(add = True)
... cmds.parent(obj, $"body_item")
... '''
>>>
>>> # Replace the group 1, with corresponding value from dict
>>> reg.sub(lambda m: d[m.group(1)], command)
'objs = [hand_R_node, hand_L_node, hips_node]\nfor obj in objs:\n cmds.select(add = True)\n cmds.parent(obj, body_node)\n'
>>>