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1. Top results related to out of print cast in python

   • Print out list of function parameters in Python

     Top Answer

     Answered Mar 15, 2009 · 17 votes

     Use the inspect module.

     >>> import inspect>>> inspect.getargspec(func)(['a', 'b', 'c'], None, None, None)-

     The first part of returned tuple is what you're looking for.

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     1/5

   • Print out a list of prime numbers in python

     Top Answer

     Answered May 07, 2022 · 3 votes

     First your prime method is wrong, because the loops starts at 1, and every numbre satisfies n%1 == 0 , it needs to starts at 2

     def prime(n): if n < 2: return False for i in range(2, n): if n % i == 0: return False return True

     Then your reverse method returns nothing so reverse(5) gives None, you have tried it manually.

     def reverse(n): values = [] while n > 0: values.append(n % 10) n = n // 10 return int("".join(map(str, values)))

     Then simplify the condition to be

     for i in range(1, 20): if prime(i) and prime(reverse(i)): L.append(i)-

     The reverse process can be done with string also, and so short that it can be inlined

     L = []for i in range(1, 20): if prime(i) and prime(int(str(i)[::-1])): L.append(i)

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     2/5

   • print out an indented node tree in python from a list of list

     Top Answer

     Answered Nov 25, 2015 · 3 votes

     As suggested in the comments, the data structure you are working with is kind of clumsy for tree data. Nevertheless, it's quite simple to print out the structure of the tree, provided that you keep track of the indentation level of the nodes you've seen so far. We can do this with a dictionary:

     # establish data set in the format of [node_id, name, parent_node_id]tree_info = [ ['1', 'Grandparent', 'root'], ['2', 'Parent 1', '1'], ['3', 'Parent 2', '1'], ['4', 'Child 1', '3'], ['5', 'Child 2', '3']]generation = {'root': 0}for node in tree_info: node_id, name, parent_id = node indent = generation[parent_id] generation[node_id] = indent + 1 print(indent * ' ' + name)

     Which yields:

     Grandparent Parent 1 Parent 2 Child 1 Child 2

     If the nodes are out of order...

     If the nodes are out of order, we need to read through the data once to assemble a dictionary of children. Then we do a tree search on the dictionary:

     tree_info = [['5', 'Child 2', '3'], ['1', 'Grandparent', 'root'], ['4', 'Child 1', '3'], ['3', 'Parent 2', '1'], ['2', 'Parent 1', '1'], ['6', 'Child 3', '2'] ]children = {}names = {}for node_id, name, parent in tree_info: children.setdefault(parent, []).append(node_id) names[node_id] = nameq = [('root', -1)]while q: parent, depth = q.pop() if parent != 'root': print(' ' * depth + names[parent]) if parent in children: for child in children[parent]: q.append((child, depth+1))

     This yields:

     Grandparent Parent 1 Child 3 Parent 2 Child 1 Child 2

     If you'd like each level to be in alphabetical order

     tree_info = [['5', 'A - Child 2', '3'], ['1', 'Grandparent', 'root'], ['4', 'B - Child 1', '3'], ['3', 'A - Parent 2', '1'], ['2', 'B - Parent 1', '1'], ['6', 'C - Child 3', '2'] ]children = {}names = {}for node_id, name, parent in tree_info: children.setdefault(parent, []).append(node_id) names[node_id] = nameq = [('root', -1)]while q: parent, depth = q.pop() if parent != 'root': print(' ' * depth + names[parent]) if parent in children: level = sorted(children[parent], key=names.get) for child in reversed(level): q.append((child, depth+1))

     Which prints:

     Grandparent A - Parent 2 A - Child 2 B - Child 1 B - Parent 1 C - Child 3

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     3/5

   • Python Print out of order

     Top Answer

     Answered Jun 20, 2020 · 3 votes

     You've run into Python's I/O buffering, which will delay writes to improve efficiency, especially when the CPU is engaged in running computationally intensive processes such as gcc. Assuming you're running a recent Python > 3.3, adding a "flush" to your print statement, as in

     print("starting build ..", flush=True) should help.

     An alternative for older versions of Python might be calling

     import sys

     ....

     sys.stdout.flush()

     following your print call.

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     4/5

   • Out of index error in python

     Top Answer

     Answered Oct 10, 2015 · 1 votes

     You're not using i but adding up C, which causes the error. Maybe the following is what you want:

     def subset(lst,n): for A in range(len(lst)-2): for B in range(A+1, len(lst)-1): for C in range(B+1, len(lst)): if n == lst[A]+lst[B]+lst[C]: return ('True') return('False')

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     5/5

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2. stackoverflow.com › python-type-casting-with-printPython Type Casting with Print - Stack Overflow

   stackoverflow.com › python-type-casting-with-print

   • Cached

   Oct 7, 2021 · 4 Answers. Sorted by: 1. Functions that don't return anything return a None (of NoneType) by default. Print doesn't return what it printed or anything else, just None. answered Oct 7, 2021 at 4:19. Andrew-Harelson. 1,033 3 11. 0. print function doesn't have a return value. Assigning it to a variable makes its value None of type NoneType.

   • Functions that don't return anything return a None (of NoneType ) by default. Print doesn't return what it printed or anything else, just None .
   • print function doesn't have a return value. Assigning it to a variable makes its value None of type NoneType .
   • Print is a function to print something on screen it did not return anything to user so it return None
   • In its most simple view you are doing this: first_digit = print(1) What's the value of first_digit ? It is NoneType because you did not assign...

3. pynative.com › python-type-castingPython Casting - Type Conversion and Type Casting - PYnative

   pynative.com › python-type-casting

   • Cached

   Mar 18, 2021 · r_num = 53.250 print(type(r_num)) # class 'float' # converting float to complex(x) c_num = complex(r_num) print("Complex number:", c_num) # Output (53.25+0j) print(type(c_num)) # class 'complex' # converting float to complex(x, y) r_num, i_num2 = 53.250, 350.750 c_num = complex(r_num, i_num2) print("Complex number:", c_num) # Output (53.25+350 ...

4. People also ask

   How to perform type casting in Python?

   • Python performs the following two types of casting. Implicit casting: The Python interpreter automatically performs an implicit Type conversion, which avoids loss of data. Explicit casting: The explicit type conversion is performed by the user using built-in functions. To perform a type casting, we are going to use the following built-in functions

   Python Casting - Type Conversion and Type Casting - PYnative

   pynative.com/python-type-casting/

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   How does cast() work in Python?

   • At runtime, cast() really does do nothing - its special behaviour is only in how type checkers interpret it. Python’s source code reveals cast() is a simple no-op function call: def cast(typ, val): """Cast a value to a type. This returns the value unchanged.

   Python type hints: how to use typing.cast() - Adam J

   adamj.eu/tech/2021/07/06/python-type-hints-how-to-use-typing-cast/

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   What does typing cast do in Python?

   • What does typing.cast do in Python? still returns instead of int. Then, what does typing.cast do here? From the documentation (emphasis mine): Cast a value to a type. This returns the value unchanged.

   types - What does typing.cast do in Python? - Stack Overflow

   stackoverflow.com/questions/51457563/what-does-typing-cast-do-in-python

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   How to use explicit and implicit casting in Python?

   • Let’s look at how we can use explicit and implicit casting, and a Mypy feature for managing calls to cast(). When we call cast(), we pass it two arguments: a type, and a value. cast() returns value unchanged, but type checkers will treat the return value as the given type instead of the input type.

   Python type hints: how to use typing.cast() - Adam J

   adamj.eu/tech/2021/07/06/python-type-hints-how-to-use-typing-cast/

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5. adamj.eu › tech › 2021/07/06Python type hints: how to use typing.cast() - Adam J

   adamj.eu › tech › 2021/07/06

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   Jul 6, 2021 · We can cast explicitly with typing.cast(), or implicitly from Any with type hints. With casting we can force the type checker to treat a variable as a given type. Let’s look at how we can use explicit and implicit casting, and a Mypy feature for managing calls to cast().

6. realpython.com › python-printYour Guide to the Python print() Function – Real Python

   realpython.com › python-print

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   >>> print (42) # <class 'int'> 42 >>> print (3.14) # <class 'float'> 3.14 >>> print (1 + 2 j) # <class 'complex'> (1+2j) >>> print (True) # <class 'bool'> True >>> print ([1, 2, 3]) # <class 'list'> [1, 2, 3] >>> print ((1, 2, 3)) # <class 'tuple'> (1, 2, 3) >>> print ({'red', 'green', 'blue'}) # <class 'set'> {'red', 'green', 'blue'} >>> print ...

7. pythonspot.com › datatype-castingpython cast - Python Tutorial

   pythonspot.com › datatype-casting

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   x = 3. y = "text" It finds x is of type integer and y of type string. Functions accept a certain datatype. For example, print only accepts the string datatype. Related Course: Python Programming Bootcamp: Go from zero to hero. Datatypes casting. If you want to print numbers you will often need casting.

8. www.adventuresinmachinelearning.com › demystifyingDemystifying Type Casting in Python: A Comprehensive Guide

   www.adventuresinmachinelearning.com › demystifying

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   Python has several built-in functions that are used for Type Casting: – `int ()`: Convert to an integer type. – `float ()`: Convert to a floating-point type. – `str ()`: Convert to a string type. – `bool ()`: Convert to a Boolean type. Let’s take a look at how we can use these functions for Type Casting. Int Type Conversion. `int ()` Function.

9. learnpython.com › blog › python-print-functionA Complete Guide to the Python print () Function

   learnpython.com › blog › python-print-function

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   Jan 25, 2022 · The Python print() function is a basic one you can understand and start using very quickly. But there’s more to it than meets the eye. In this article, we explore this function in detail by explaining how all the arguments work and showing you some examples.