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open() in Python does not create a file if it doesn't exist
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830
You should use open with the w+ mode:
file = open('myfile.dat', 'w+')
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Compare two objects' properties to find differences?
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answered Jun 5 '09 at 19:49
Jon SkeetJon Skeet
1211k772772 gold badges85588558 silver badges88218821 bronze badges
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Why not be dependently typed?
...iques.
– pigworker
Oct 18 '12 at 19:06
3
As a side note, someone recently pointed me to this pape...
Using switch statement with a range of value in each case?
... System.out.println("testing case 1 to 5");
} else if (isBetween(num, 6, 10)) {
System.out.println("testing case 6 to 10");
}
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What is a stack trace, and how can I use it to debug my application errors?
...hrow new IllegalStateException("A book has a null property", e)
39 }
40 }
This might give you a stack trace that looks like:
Exception in thread "main" java.lang.IllegalStateException: A book has a null property
at com.example.myproject.Author.getBookIds(Author.java:38)
at ...
What are the precise rules for when you can omit parenthesis, dots, braces, = (functions), etc.?
... with infix notation. The folding functions are a clear example of that:
(0 /: list) ((cnt, string) => cnt + string.size)
(list foldLeft 0) ((cnt, string) => cnt + string.size)
You need to use parenthesis outside the infix call. I'm not sure the exact rules at play here.
Now, let's talk ab...
Get filename and path from URI from mediastore
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edited Jul 9 '18 at 18:20
Hasib Akter
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answered...
Removing carriage return and new-line from the end of a string in c#
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200
This will trim off any combination of carriage returns and newlines from the end of s:
s = s.T...
How do I access command line arguments in Python?
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edited Aug 1 '16 at 20:36
yiwei
3,23077 gold badges3030 silver badges5050 bronze badges
answered Oc...
Center image in div horizontally [duplicate]
...ght: auto;
or
/* for the img inside your div */
display: block;
margin: 0 auto;
That's all.
Note, that you'll also have to set an initial min-width for your outer div.
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