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Problem :

When I try to use a print statement in Python, it gives me below error:
SyntaxError: Missing parentheses in call to 'print'
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2 Answers

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Solution :

The error message suggests that you are attempting to use Python 3 to run a program that uses the Python 2 print statement:

In Python 3 you need to add parentheses around the value to be printed:

print("Hello, World!")

Further Readings:

https://github.com/BitMEX/easy-data-scripts/issues/1

36.1k points
edited by
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Solution:

This error message implies that you are trying to employ Python 3 to pursue an example or run a program that uses the Python 2 print statement:

The statement above does not perform in Python 3. In Python 3 you require to include parentheses around the value to be printed:

print("Hello, World!")

“SyntaxError: Missing parentheses in call to 'print'” is a new error message that was included in Python 3.4.2 primarily to help users that are attempting to pursue a Python 2 tutorial while running Python 3.

In Python 3, printing values altered from being a distinct statement to being an ordinary function call, hence it now requires parentheses:

>>> print("Hello, World!")
Hello, World!

In prior versions of Python 3, the interpreter only reports a generic syntax error, without giving any helpfl hints as to what might be going wrong:

>>> print "Hello, World!"
  File "<stdin>", line 1
    print "Hello, World!"
                        ^
SyntaxError: invalid syntax

As for why print became an ordinary function in Python 3, that didn't connect to the basic form of the statement, however rather to how you did more complicated things like printing multiple items to stderr with a trailing space rather than ending the line.

In Python 2:

>>> import sys
>>> print >> sys.stderr, 1, 2, 3,; print >> sys.stderr, 4, 5, 6
1 2 3 4 5 6

In Python 3:

>>> import sys
>>> print(1, 2, 3, file=sys.stderr, end=" "); print(4, 5, 6, file=sys.stderr)
1 2 3 4 5 6

Begining with the Python 3.6.3 release in September 2017, few error messages connected to the Python 2.x print syntax have been updated to recommend their Python 3.x counterparts:

>>> print "Hello!"
  File "<stdin>", line 1
    print "Hello!"
                 ^
SyntaxError: Missing parentheses in call to 'print'. Did you mean print("Hello!")?

Because the "Missing parentheses in call to print" instance is a compile time syntax error and therefore has access to the raw source code, it's able to add the full text on the rest of the line in the expressed replacement. But, it doesn't presently attempt to perform out the appropriate quotes to place around that expression (that's not impossible, only sufficiently complicated that it hasn't been done).

The TypeError moved for the right shift operator has also been customised:

>>> print >> sys.stderr
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
TypeError: unsupported operand type(s) for >>: 'builtin_function_or_method' and '_io.TextIOWrapper'. Did you mean "print(<message>, file=<output_stream>)"?

Because this error is moved at the time the code runs, rather than when it is compiled, it doesn't have access to the raw source code, and therefore employes meta-variables (<message> and <output_stream>) in the revealed replacement expression instead of whatever the user really typed. Unlike the syntax error instance, it's straightforward to place quotes around the Python expression in the custom right shift error message.

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