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The OP not only wants to replace 46, but any number [0-9]*

Philippos
– Philippos

2017-05-10 10:51:29 +00:00
Commented May 10, 2017 at 10:51
This was not made clear in the version of the question which I answered. Better answers have been provided in the interim since the clarification.

DopeGhoti
– DopeGhoti

2017-05-10 15:58:28 +00:00
Commented May 10, 2017 at 15:58

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create code fences with backticks ` or tildes ~
```
like so
```
add language identifier to highlight code
```python
def function(foo):
print(foo)
```
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indent code by 4 spaces
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