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Why did they change python2s print to print() in python3? Which syntax/function do you prefer?
Why did they change print?
2 Réponses
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From what I hear, it sounds like Guido thinks he made a mistake when he didn't make print a function when he created Python.
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"""
The print statement has been replaced with a print() function, with keyword arguments to replace most of the special syntax of the old print statement (PEP 3105).
Examples:
Old: print "The answer is", 2*2
New: print("The answer is", 2*2)
Old: print x, # Trailing comma suppresses newline
New: print(x, end=" ") # Appends a space instead of a newline
Old: print # Prints a newline
New: print() # You must call the function!
Old: print >>sys.stderr, "fatal error"
New: print("fatal error", file=sys.stderr)
Old: print (x, y) # prints repr((x, y))
New: print((x, y)) # Not the same as print(x, y)!
You can also customize the separator between items,
e.g.:
print("There are <", 2**32, "> possibilities!", sep="")
which produces:
There are <4294967296> possibilities!
"""
ref: Python 3.0 docs