具有以下结构的数据框-
ID text
0 Language processing in python th is great
1 Relace the string
字典名为自定义修复程序
{'Relace': 'Replace', 'th' : 'three'}
尝试过代码,输出如下: 电流输出-
ID text
0 Language processing in pythirdon three is great
1 Replace threee string
代码:
def multiple_replace(dict, text):
# Create a regular expression from the dictionary keys
regex = re.compile("(%s)" % "|".join(map(re.escape, dict.keys())))
# For each match, look-up corresponding value in dictionary
return regex.sub(lambda mo: dict[mo.string[mo.start():mo.end()]], text)
df['col1'] = df.apply(lambda row: multiple_replace(custom_fix, row['text']), axis=1)
预期输出-
ID text
0 Language processing in python three is great
1 Replace the string
答案 0 :(得分:1)
我不是正则表达式专家,也许这不是最佳解决方案,但是使用
正则表达式中的单词边界\b
应该可以解决问题,这里是固定功能:
def multiple_replace(d, text):
# Create a regular expression from the dictionary keys
regex = re.compile("(%s)" % "|".join(["\\b" + x + "\\b" for x in d.keys()]))
# For each match, look-up corresponding value in dictionary
return regex.sub(lambda mo: d[mo.string[mo.start():mo.end()]], text)
答案 1 :(得分:0)
您还可以拆分字符串以获取所有单词并遍历列表。
def multiple_replace(d, text):
splitText=text.split()
disc=len(set(splitText).intersection(set(d.keys())))
if disc==0:
return ' '.join(splitText)
else:
for k in range(len(splitText)):
try:
splitText[k]=d[splitText[k]]
except KeyError:
pass
return ' '.join(splitText)
希望有帮助。