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Using Open with a filename that contains :

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Using Open with a filename that contains :

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.everyoneloves__top-leaderboard:empty,.everyoneloves__mid-leaderboard:empty,.everyoneloves__bot-mid-leaderboard:empty margin-bottom:0;

1

$begingroup$

I am writing some data to a .txt file. I am using Open[] to create the text file in the directory I want and then Write[] and WriteString[]. (I am using FileNameJoin[] to create the actual filenames). I tried this out using a test file, called test.txt (and stored in the appropriate directory), it opens, writes to, and closes the file how I want. However, every time the notebook is run, I want to create a new output .txt file, so the files are named based on the date and time (in 24 hours), so part of the filename looks like HH:MM:SS. So, I am running something that looks like:

filename = 
 FileNameJoin["C:", "Users", "Me", "Dir1", "Dir2", 
"2019-07-0810:59:01.txt"];
f=OpenWrite[filename]

Mathematica gives this error:

OpenWrite::noopen: Cannot open C:UsersMeDir1Dir22019-07-0810:59:01.txt.

I think what it doesn't like is the colons, since if I replace : with ; it opens/creates the file just fine (and it can open a file with just the date as the name). However, this is kind of ugly, and I would really prefer to use : instead.

Any suggestions are appreciated! Thanks you guys!

export import text output

share|improve this question

asked 8 hours ago

MissyinvisibleMissyinvisible

833 bronze badges

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$endgroup$

• 
  
  
  

  
  2
  

  
  
  
  
  
  

  
  $begingroup$
  Personally, I solve this problem be replacing XX : YY : ZZ by XXhYYmZZs in the name of the file. Here is the code : StringReplace[DateString[], h : (_ ~~ _) ~~ ":" ~~ m : (_ ~~ _) ~~ ":" ~~ s : (_ ~~ _) :> h ~~ "h" ~~ m ~~ "m" ~~ s ~~ "s"]. It solves a second problem too : sometimes (depending on the operating system) the seconds have decimals (10.45 for instance)
  $endgroup$
  – andre314
  8 hours ago
  
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  $begingroup$
  If you really want to put colons in file names, I suggest you use Linux. However, even there, I think they are better avoided.
  $endgroup$
  – mikado
  7 hours ago
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  $begingroup$
  Using the StringReplace info from @andre314, you might also consider using DateString["ISODateTime"] such as this: StringReplace[DateString["ISODateTime"], h : (_ ~~ ) ~~ ":" ~~ m : ( ~~ ) ~~ ":" ~~ s : ( ~~ _) :> h ~~ "h" ~~ m ~~ "m" ~~ s ~~ "s"] The result is a more compact representation.
  $endgroup$
  – Mark R
  2 hours ago
  

  
  
  
  

add a comment | 

1

$begingroup$

I am writing some data to a .txt file. I am using Open[] to create the text file in the directory I want and then Write[] and WriteString[]. (I am using FileNameJoin[] to create the actual filenames). I tried this out using a test file, called test.txt (and stored in the appropriate directory), it opens, writes to, and closes the file how I want. However, every time the notebook is run, I want to create a new output .txt file, so the files are named based on the date and time (in 24 hours), so part of the filename looks like HH:MM:SS. So, I am running something that looks like:

filename = 
 FileNameJoin["C:", "Users", "Me", "Dir1", "Dir2", 
"2019-07-0810:59:01.txt"];
f=OpenWrite[filename]

Mathematica gives this error:

OpenWrite::noopen: Cannot open C:UsersMeDir1Dir22019-07-0810:59:01.txt.

I think what it doesn't like is the colons, since if I replace : with ; it opens/creates the file just fine (and it can open a file with just the date as the name). However, this is kind of ugly, and I would really prefer to use : instead.

Any suggestions are appreciated! Thanks you guys!

export import text output

share|improve this question

asked 8 hours ago

MissyinvisibleMissyinvisible

833 bronze badges

New contributor

Missyinvisible is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

$endgroup$

• 
  
  
  

  
  2
  

  
  
  
  
  
  

  
  $begingroup$
  Personally, I solve this problem be replacing XX : YY : ZZ by XXhYYmZZs in the name of the file. Here is the code : StringReplace[DateString[], h : (_ ~~ _) ~~ ":" ~~ m : (_ ~~ _) ~~ ":" ~~ s : (_ ~~ _) :> h ~~ "h" ~~ m ~~ "m" ~~ s ~~ "s"]. It solves a second problem too : sometimes (depending on the operating system) the seconds have decimals (10.45 for instance)
  $endgroup$
  – andre314
  8 hours ago
  
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  $begingroup$
  If you really want to put colons in file names, I suggest you use Linux. However, even there, I think they are better avoided.
  $endgroup$
  – mikado
  7 hours ago
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  $begingroup$
  Using the StringReplace info from @andre314, you might also consider using DateString["ISODateTime"] such as this: StringReplace[DateString["ISODateTime"], h : (_ ~~ ) ~~ ":" ~~ m : ( ~~ ) ~~ ":" ~~ s : ( ~~ _) :> h ~~ "h" ~~ m ~~ "m" ~~ s ~~ "s"] The result is a more compact representation.
  $endgroup$
  – Mark R
  2 hours ago
  

  
  
  
  

add a comment | 

$begingroup$

I am writing some data to a .txt file. I am using Open[] to create the text file in the directory I want and then Write[] and WriteString[]. (I am using FileNameJoin[] to create the actual filenames). I tried this out using a test file, called test.txt (and stored in the appropriate directory), it opens, writes to, and closes the file how I want. However, every time the notebook is run, I want to create a new output .txt file, so the files are named based on the date and time (in 24 hours), so part of the filename looks like HH:MM:SS. So, I am running something that looks like:

filename = 
 FileNameJoin["C:", "Users", "Me", "Dir1", "Dir2", 
"2019-07-0810:59:01.txt"];
f=OpenWrite[filename]

Mathematica gives this error:

OpenWrite::noopen: Cannot open C:UsersMeDir1Dir22019-07-0810:59:01.txt.

I think what it doesn't like is the colons, since if I replace : with ; it opens/creates the file just fine (and it can open a file with just the date as the name). However, this is kind of ugly, and I would really prefer to use : instead.

Any suggestions are appreciated! Thanks you guys!

export import text output

share|improve this question

asked 8 hours ago

MissyinvisibleMissyinvisible

833 bronze badges

New contributor

Missyinvisible is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

$endgroup$

filename = 
 FileNameJoin["C:", "Users", "Me", "Dir1", "Dir2", 
"2019-07-0810:59:01.txt"];
f=OpenWrite[filename]

OpenWrite::noopen: Cannot open C:UsersMeDir1Dir22019-07-0810:59:01.txt.

share|improve this question

asked 8 hours ago

MissyinvisibleMissyinvisible

833 bronze badges

New contributor

Missyinvisible is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

share|improve this question

asked 8 hours ago

MissyinvisibleMissyinvisible

833 bronze badges

New contributor

Missyinvisible is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

asked 8 hours ago

MissyinvisibleMissyinvisible

833 bronze badges

New contributor

Missyinvisible is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

asked 8 hours ago

MissyinvisibleMissyinvisible

833 bronze badges

1 Answer
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5

$begingroup$

This is not possible. A colon is not a valid character in a file name on Windows.

Reference: https://docs.microsoft.com/en-us/windows/win32/msi/filename

share|improve this answer

answered 8 hours ago

SzabolcsSzabolcs

169k1717 gold badges461461 silver badges983983 bronze badges

$endgroup$

• 
  
  
  

  
  

  
  
  
  
  
  

  
  $begingroup$
  You're right @Szabolcs, thanks! I am just so used to Linux.
  $endgroup$
  – Missyinvisible
  6 hours ago
  

  
  
  
  

add a comment | 

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5

$begingroup$

This is not possible. A colon is not a valid character in a file name on Windows.

Reference: https://docs.microsoft.com/en-us/windows/win32/msi/filename

share|improve this answer

answered 8 hours ago

SzabolcsSzabolcs

169k1717 gold badges461461 silver badges983983 bronze badges

$endgroup$

• 
  
  
  

  
  

  
  
  
  
  
  

  
  $begingroup$
  You're right @Szabolcs, thanks! I am just so used to Linux.
  $endgroup$
  – Missyinvisible
  6 hours ago
  

  
  
  
  

add a comment | 

5

$begingroup$

This is not possible. A colon is not a valid character in a file name on Windows.

Reference: https://docs.microsoft.com/en-us/windows/win32/msi/filename

share|improve this answer

answered 8 hours ago

SzabolcsSzabolcs

169k1717 gold badges461461 silver badges983983 bronze badges

$endgroup$

• 
  
  
  

  
  

  
  
  
  
  
  

  
  $begingroup$
  You're right @Szabolcs, thanks! I am just so used to Linux.
  $endgroup$
  – Missyinvisible
  6 hours ago
  

  
  
  
  

add a comment | 

$begingroup$

This is not possible. A colon is not a valid character in a file name on Windows.

Reference: https://docs.microsoft.com/en-us/windows/win32/msi/filename

share|improve this answer

answered 8 hours ago

SzabolcsSzabolcs

169k1717 gold badges461461 silver badges983983 bronze badges

$endgroup$

share|improve this answer

answered 8 hours ago

SzabolcsSzabolcs

169k1717 gold badges461461 silver badges983983 bronze badges

answered 8 hours ago

SzabolcsSzabolcs

169k1717 gold badges461461 silver badges983983 bronze badges

answered 8 hours ago

SzabolcsSzabolcs

169k1717 gold badges461461 silver badges983983 bronze badges