How to remove newlines in Python
First of all, we need to understand the difference between '\\n' and '\n':
print("a\\nb")
print("a\nb")
Output effect:
a\nb
a
b
Method 1. Exlude function
exclude means the meaning of extrusion, the antonym of include.
However, when using the exclude function to remove line breaks in text files, it is actually irrelevant, and both \\n,\n can be removed.
fi = open("","r")
fo = open("","w")
txt = ()
d = {}
exclude = "! ? , . : ; \" \n -"
# It's OK to write it as \\nfor line in txt:
if line in exclude:
continue
else:
d[line]=(line,0)+1
ls =list(())
print(ls)
Because in text files, they are actually removed as strings’\n’, this is the first method.
Method 2. del d['\n']
fi = open("","r")
fo = open("","w")
txt = ()
d = {}
exclude = "! ? , . : ; \" -"
for line in txt:
if line in exclude:
continue
else:
d[line]=(line,0)+1
del d['\n']
When using dictionaries to collect text data, just delete the key.
Method 3. replace('\n', '')
fi = open("","r")
fo = open("","w")
txt = ()
d = {}
exclude = "! ? , . : ; \" -"
for line in txt:
line = ("\n", "")
# Replace it directly with empty if line in exclude:
continue
else:
d[line]=(line,0)+1
Method 4: strip function
fi = open("","r")
fo = open("","w")
txt = ()
d = {}
exclude = "! ? , . : ; \" -"
for line in txt:
line = ()
if line in exclude:
continue
else:
d[line]=(line,0)+1
Used to remove characters specified at the beginning and end of a string (default is a space or newline) or character sequence.
Notice:
This method can only delete characters at the beginning or end, and cannot delete characters in the middle.
CSV is often used to delete data line breaks.
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