Python String maketrans() Method
Example
Create a mapping table, and use it in the translate() method to replace any "S" characters with a "P" character:
txt = "Hello Sam!";
mytable = txt.maketrans("S", "P");
print(txt.translate(mytable));
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Definition and Usage
The maketrans() method returns a mapping
table that can be used with the
translate() method to replace
specified characters.
Syntax
string.maketrans(x, y, z)
Parameter Values
| Parameter | Description |
|---|---|
| x | Required. If only one parameter is specified, this has to be a dictionary describing how to perform the replace. If two or more parameters are specified, this parameter has to be a string specifying the characters you want to replace. |
| y | Optional. A string with the same length as parameter x. Each character in the first parameter will be replaced with the corresponding character in this string. |
| z | Optional. A string describing which characters to remove from the original string. |
More Examples
Example
Use a mapping table to replace many characters:
txt = "Hi Sam!";
x = "mSa";
y = "eJo";
mytable = txt.maketrans(x,
y);
print(txt.translate(mytable));
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Example
The third parameter in the mapping table describes characters that you want to remove from the string:
txt = "Good
night Sam!";
x = "mSa";
y = "eJo";
z = "odnght";
mytable = txt.maketrans(x,
y, z);
print(txt.translate(mytable));
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Example
The maketrans() method itself returns a
dictionary describing each replacement, in unicode:
txt = "Good
night Sam!";
x = "mSa";
y = "eJo";
z = "odnght";
print(txt.maketrans(x,
y, z));
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