Hello,

https://docs.python.org/3/library/stdtypes.html#string-methods

str.replace(old, new[, count])¶
Return a copy of the string with all occurrences of substring old
replaced by new. If the optional argument count is given, only the first
count occurrences are replaced.

Attention when the string contains the escape character.

Consider :

a="H:\2023"; print(a.replace("\\","/"))

H:3

a="H:\a2023"; print(a.replace("\\","/"))

H:2023

a="H:\_2023"; print(a.replace("\\","/"))

H:/_2023

Best regards,
Bernard LEDRU

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On 29 Oct 2022, at 22:14, Bernard LEDRU <python@bernardledru.be> wrote:

Hello,

https://docs.python.org/3/library/stdtypes.html#string-methods

str.replace(old, new[, count])¶
Return a copy of the string with all occurrences of substring old replaced by new. If the optional argument count is given, only the first count occurrences are replaced.

Attention when the string contains the escape character.

Consider :

a="H:\2023"; print(a.replace("\\","/"))

H:3

a="H:\a2023"; print(a.replace("\\","/"))

H:2023

a="H:\_2023"; print(a.replace("\\","/"))

H:/_2023

String a does not quote the \ after :.
You need “H:\\2023” etc. check what a is before the replace with a print(repr(a))

Barry

Best regards,
Bernard LEDRU
--
https://mail.python.org/mailman/listinfo/python-list

--- SoupGate-Win32 v1.05
* Origin: fsxNet Usenet Gateway (21:1/5)

Better to use raw strings whenever backslashes are involved.

On 10/29/2022 2:21 PM, Bernard LEDRU wrote:

Hello,

https://docs.python.org/3/library/stdtypes.html#string-methods

str.replace(old, new[, count])¶
Return a copy of the string with all occurrences of substring old
replaced by new. If the optional argument count is given, only the first count occurrences are replaced.

Attention when the string contains the escape character.

Consider :

a="H:\2023"; print(a.replace("\\","/"))

H:3

a="H:\a2023"; print(a.replace("\\","/"))

H:2023

These examples actually produce an "H" with a symbol after it, a
different symbol for each. Probably the message posting system can't
display it, but I see it in a python terminal session on Windows. So
the first a="H:\2023" example produces "Hx", where x is some symbol.
Since there is no backslash, no character gets replaced. IOW,

a="H:\2023"; print(a)
and
a="H:\2023"; print(a.replace("\\","/"))
print the same thing.

a="H:\_2023"; print(a.replace("\\","/"))

H:/_2023

What did you expect or want to happen?

--- SoupGate-Win32 v1.05
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I believe you would do well to print a, before trying to transform it into something else.

'\2' is chr(2).
'\a' is the bell character, and is unprintable.
'\_' is two characters though.

On Sat, Oct 29, 2022 at 2:12 PM Bernard LEDRU <python@bernardledru.be>
wrote:

Hello,

https://docs.python.org/3/library/stdtypes.html#string-methods

str.replace(old, new[, count])¶
Return a copy of the string with all occurrences of substring old
replaced by new. If the optional argument count is given, only the first count occurrences are replaced.

Attention when the string contains the escape character.

Consider :

a="H:\2023"; print(a.replace("\\","/"))

H:3

a="H:\a2023"; print(a.replace("\\","/"))

H:2023

a="H:\_2023"; print(a.replace("\\","/"))

H:/_2023

Best regards,
Bernard LEDRU
--
https://mail.python.org/mailman/listinfo/python-list

--- SoupGate-Win32 v1.05
* Origin: fsxNet Usenet Gateway (21:1/5)

On 2022-10-29 19:21, Bernard LEDRU wrote:

Hello,

https://docs.python.org/3/library/stdtypes.html#string-methods

str.replace(old, new[, count])¶
Return a copy of the string with all occurrences of substring old
replaced by new. If the optional argument count is given, only the first count occurrences are replaced.

Attention when the string contains the escape character.

Consider :

a="H:\2023"; print(a.replace("\\","/"))

H:3

a="H:\a2023"; print(a.replace("\\","/"))

H:2023

a="H:\_2023"; print(a.replace("\\","/"))

H:/_2023

In a plain string literal, \ followed by 1..3 of the digits 0..7 is an
octal (base 8) escape sequence, and \ followed by 'a' is the bel
character, so '\7' == '\07' == '\007' == '\a' == '\x07'.

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