大约有 13,066 项符合查询结果（耗时：0.0223秒） [XML]
How can I pass a list as a command-line argument with argparse?
I am trying to pass a list as an argument to a command line program. Is there an argparse option to pass a list as option?
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Python assigning multiple variables to same value? list behavior
I tried to use multiple assignment as show below to initialize variables, but I got confused by the behavior, I expect to reassign the values list separately, I mean b[0] and c[0] equal 0 as before.
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Why is printing to stdout so slow? Can it be sped up?
I've always been amazed/frustrated with how long it takes to simply output to the terminal with a print statement. After some recent painfully slow logging I decided to look into it and was quite surprised to find that almost all the time spent is waiting for the terminal to process the results.
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How do I check if a string contains a specific word?
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You can use the strpos() function which is used to find the occurrence of one string inside another one:
$a = 'How are you?';
if (strpos($a, 'are') !== false) {
echo 'true';
}
Note that the use of !== false is deliberate ...
What's the difference between ASCII and Unicode?
What's the exact difference between Unicode and ASCII?
9 Answers
9
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Rails: FATAL - Peer authentication failed for user (PG::Error)
I am running my development on Ubuntu 11.10, and RubyMine
8 Answers
8
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How does a Java HashMap handle different objects with the same hash code?
As per my understanding I think:
14 Answers
14
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String concatenation: concat() vs “+” operator
Assuming String a and b:
11 Answers
11
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how to check the dtype of a column in python pandas
I need to use different functions to treat numeric columns and string columns. What I am doing now is really dumb:
6 Answer...
How do I undo the most recent local commits in Git?
I accidentally committed the wrong files to Git , but I haven't pushed the commit to the server yet.
86 Answers
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