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Python 2.7 and 3.0 unified all collection types by introducing dictionary and set comprehensions, similar to list comprehensions: >>> [ n * n for n in range ( 5 )] # regular list comprehension [ 0 , 1 , 4 , 9 , 16 ] >>> >>> { n * n for n in range ( 5 )} # set comprehension { 0 , 1 , 4 , 9 , 16 } >>> >>> { n : n * n for n in range ( 5 )} # dict ...
Here, the list [0..] represents , x^2>3 represents the predicate, and 2*x represents the output expression.. List comprehensions give results in a defined order (unlike the members of sets); and list comprehensions may generate the members of a list in order, rather than produce the entirety of the list thus allowing, for example, the previous Haskell definition of the members of an infinite list.
[52] [53] While Python 2.7 and older versions are officially unsupported, a different unofficial Python implementation, PyPy, continues to support Python 2, i.e. "2.7.18+" (plus 3.10), with the plus meaning (at least some) "backported security updates". [54] Python 3.0 was released on 3 December 2008, with some new semantics and changed syntax.
It originally comes from CPL, in which equivalent syntax for e 1 ? e 2 : e 3 was e 1 → e 2, e 3. [1] [2] Although many ternary operators are possible, the conditional operator is so common, and other ternary operators so rare, that the conditional operator is commonly referred to as the ternary operator.
You'll never find someone who loves Ragdoll cats like one woman does. The vet tech was so excited when she saw there was a Ragdoll on the schedule for that day.
The dangling else is a problem in programming of parser generators in which an optional else clause in an if–then(–else) statement can make nested conditional statements ambiguous. Formally, the reference context-free grammar of the language is ambiguous , meaning there is more than one correct parse tree .
The seized drug would have been worth up to NZ$3.8 million, about $2.2 million USD, said the New Zealand Customs Service in a news release Woman Attempting to Smuggle 22 Pounds of Meth Wrapped as ...
Authorities in California have busted 117 sticky-fingered grinches who were part of an organized holiday shoplifting ring. California Highway Patrol recovered 767 stolen items worth more than ...