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replace(


str = "abcd   efg, gfe    dcba\
hijk lmn"
print(str.replace("\r\n"," "))
str = "abcd   efg, gfe    dcba\
hijk lmn"
print(str.replace('/r/n',' '))

分别运行后结果都是

abcd efg, gfe dcbahijk lmn


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