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Print result of function doesn't work
by Torbjorn Svensson Diaz July 23, 2024

July 23, 2024

Hello, dear tutors! Here's my program. import math print("What is the length of the first leg of the triangle?") leg1 = input() print("What is the length of the second leg of the triangle?") leg2 = input() def hypotenuse(leg1, leg2): legs = leg1**2 + leg2**2 result = math.sqrt(legs) return result x = hypotenuse print(x) When I run it in Thonny it says as follows %Run hypotenuse.py What is the length of the first leg of the triangle? 3 What is the lenght of the second leg of the triangle? 4 <function hypotenuse at 0x7fa05d5a1940> I have the same trouble when I run the program as a script in the terminal but when I use interactive mode I have no difficulties. The same program in Scheme is (define (hypotenuse leg1 leg2) (sqrt (+ (expt leg1 2) (expt leg2 2)))) (hypotenuse 3 4) and works wonders. Why doesn't my Python program run? What do I do wrong? Can someone help me out? Perhaps give me some pointers as to what I should learn? Thanks in advance and best regards,

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How to install tensorflow on Python 2.7 in Windows?
by marc nicole June 26, 2024

June 26, 2024

Browsing the available version of tensorflow for the dates before January 2021 (date when Python 2.7 stopped being supported) I can't find a tensorflow version for Python 2.7 that works under Windows. The reference site I use is https://pypi.org/project/tensorflow/ Anybody can point out a compatible .whl file with Python 2.7 and Windows?

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How to go about a simple object grabbing in python (given coordinates of arms and objects)
by marc nicole June 24, 2024

June 24, 2024

Hello to all of this magnificent community! I have this problem I had already spent a few days on and still can't figure out a proper solution. So, given the x,y,z coordinates of a target object and the offset x,y,z of arms of a robot, what is a good algorithm to perform to grab the object between the hands (either from both sides or from below all using both hands). Specifically, my problem is applied to a NAO robot environment where I retrieve a target object coordinates using the following code: tracker_service= session.service("ALTracker") xyz_pos = tracker_service.getTargetPosition(motion.FRAME_TORSO) src: http://doc.aldebaran.com/2-8/naoqi/motion/control-cartesian.html#motion-car… Then I get to move the right arm towards nearby the object using the following code: effector = "RArm" frame = motion.FRAME_TORSO effector_offset = almath.Transform(self.motion.getTransform(effector, frame, False)) effector_init_3d_position = almath.position3DFromTransform( effector_offset) target_3d_position = almath.Position3D(target_position) move_3d = target_3d_position - effector_init_3d_position moveTransform = almath.Transform.fromPosition(move_3d.x, move_3d.y, move_3d.z) target_transformer_list = list(moveTransform.toVector()) times = [2.0] axis_mask_list = motion.AXIS_MASK_VEL self.motion.transformInterpolations(effector, frame, target_transformer_list, axis_mask_list, times). src: http://doc.aldebaran.com/1-14/dev/python/examples/almath/index.html?highlig… This question is specific to NAO environment but in general how to go about this task? what is a most common algorithm used in this case? Do I have to also get the side of the object in order to know where exactly the arms should be placed?

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recommends for online envionments for running pygame and python programs
by Nathan Smith June 13, 2024

June 13, 2024

Hello list, I was wondering if anyone has recommends for online environments for running pygame. There's a few knocking around, but they are all restricted in some way. Looking at the pygame examples folder in GitHub, they draw from bmp files and .wav files to run their games (such as the little alien arcade). None of the pygame online runners I have found would let you run these.. Any suggestions? Nathan

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use of dict() function
by Alex Kleider June 12, 2024

June 12, 2024

#!/usr/bin/env python3 """ Question: I created a class which I initially coded as in Rec0. I then read[1] that calling dict(mapping) returns a new dict essentially providing the functionality of my class (except for the call-ability feature.) The interesting thing is that calling dict(mapping) within a class definition seems to result in different behavior than when called elsewhere. Is there an explanation??? The following code hopefully illustrates what I'm on about. Cheers, Alex Kleider [1]: https://www.thepythoncodingstack.com/p/python-dict-is-more-versatile-than-y… """ class Rec0(dict): def __init__(self, rec): for key, value in rec.items(): self[key] = value def __call__(self, fstr): return fstr.format(**self) class Rec1(dict): def __init__(self, rec): self = dict(rec) def __call__(self, fstr): return fstr.format(**self) def test(): d0 = {"husband": "Alex", "wife": "June", "daughter": "Tanya", "son": "Kelly", } d1 = dict(d0) d1["grand_daughter"] = "Isabella" print("Using dict function directly...") print(" d1 should (and does) contain five entries as follows:") print(d1); print() d0 = {"husband": "Alex", "wife": "June", "daughter": "Tanya", "son": "Kelly", } d1 = Rec0(d0) d1["grand_daughter"] = "Isabella" print("Using Rec0 (which doesn't use the dict() function)...") print(" d1 also contain five entries as follows:") print(d1); print() d0 = {"husband": "Alex", "wife": "June", "daughter": "Tanya", "son": "Kelly", } d1 = Rec1(d0) d1["grand_daughter"] = "Isabella" print("Using Rec1 (which uses the dict() function)...") print(" d1 should (but doesn't) contain the five entries:") print(d1); print() if __name__ == "__main__": test()

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Couldn't install numpy on Python 2.7
by marc nicole June 12, 2024

June 12, 2024

I am trying to install numpy library on Python 2.7.15 in PyCharm but the error message I get is: ERROR: Could not find a version that satisfies the requirement numpy (from > versions: none) > ERROR: No matching distribution found for numpy > c:\python27\lib\site-packages\pip\_vendor\urllib3\util\ssl_.py:164: > InsecurePlatformWarning: A true SSLContext object is not available. This > prevents urllib3 fro > m configuring SSL appropriately and may cause certain SSL connections to > fail. You can upgrade to a newer version of Python to solve this. For more > information, see > https://urllib3.readthedocs.io/en/latest/advanced-usage.html#ssl-warnings > InsecurePlatformWarning, Any clues?

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PIP SSL Errno 11001
by Krasicky, Luc June 8, 2024

June 8, 2024

Hello, I'm currently working on an issue I'm having with PIP. I am on windows 10 running PY version 3.12 with pip version 23.2.1. I am on a corporate computer in my office. I cannot install packages. I run the command below and get the following error: >pip install pandas WARNING: Retrying (Retry(total=4, connect=None, read=None, redirect=None, status=None)) after connection broken by 'ProxyError('Cannot connect to proxy.', NewConnectionError('<pip._vendor.urllib3.connection.HTTPSConnection object at 0x000002A771A2EDB0>: Failed to establish a new connection: [Errno 11001] getaddrinfo failed'))': /simple/pandas/ WARNING: Retrying (Retry(total=3, connect=None, read=None, redirect=None, status=None)) after connection broken by 'ProxyError('Cannot connect to proxy.', NewConnectionError('<pip._vendor.urllib3.connection.HTTPSConnection object at 0x000002A771B914C0>: Failed to establish a new connection: [Errno 11001] getaddrinfo failed'))': /simple/pandas/ WARNING: Retrying (Retry(total=2, connect=None, read=None, redirect=None, status=None)) after connection broken by 'ProxyError('Cannot connect to proxy.', NewConnectionError('<pip._vendor.urllib3.connection.HTTPSConnection object at 0x000002A772576CC0>: Failed to establish a new connection: [Errno 11001] getaddrinfo failed'))': /simple/pandas/ WARNING: Retrying (Retry(total=1, connect=None, read=None, redirect=None, status=None)) after connection broken by 'ProxyError('Cannot connect to proxy.', NewConnectionError('<pip._vendor.urllib3.connection.HTTPSConnection object at 0x000002A772576F30>: Failed to establish a new connection: [Errno 11001] getaddrinfo failed'))': /simple/pandas/ WARNING: Retrying (Retry(total=0, connect=None, read=None, redirect=None, status=None)) after connection broken by 'ProxyError('Cannot connect to proxy.', NewConnectionError('<pip._vendor.urllib3.connection.HTTPSConnection object at 0x000002A772577020>: Failed to establish a new connection: [Errno 11001] getaddrinfo failed'))': /simple/pandas/ ERROR: Could not find a version that satisfies the requirement pandas (from versions: none) ERROR: No matching distribution found for pandas I've done a couple of things to try and solve the issue, but still cannot. I tried running the below: pip install --trusted-host pypi.org --trusted-host pypi.python.org --trusted-host files.pythonhosted.org numpy I added a pip.ini file to the >AppData>Roaming>Pip that contains the following: [global] trusted-host = files.pythonhosted.org pypi.org pypi.python.org proxy = myproxy (left this out for obvious reasons) I also tried adding my user/password to the proxy. Am I screwing up the format of my proxy? Do I need to somehow include my IP address? I am not sure where to go from here. Please let me know if you have any ideas! ________________________________ This message, including any attachments, is intended only for the use of the individual(s) to which it is addressed and may contain information that is privileged/confidential. Any other distribution, copying or disclosure is strictly prohibited. If you are not the intended recipient or have received this message in error, please notify us immediately by reply email and permanently delete this message including any attachments, without reading it or making a copy. You are receiving this email because our records show that you have a relationship with one or more of the CIBC Capital Markets lines of business of Canadian Imperial Bank of Commerce (CIBC) or CIBC World Markets Inc., which includes Investment and Corporate Banking and Global Markets. If you believe you are receiving this message in error or you no longer wish to receive electronic messages from us, you may unsubscribe<https://www.cibc.com/ca/unsubscribe/index.html?Data=KLInQhb5yMr03Q2BLXRYpux…> at any time. If you experience challenges with the unsubscribe link, reply to this email with the Subject Line "Unsubscribe" and Cc: Mailbox.CASLUnsubscribe(a)cibc.com. Please note that by selecting unsubscribe, we will only be able to send you emails that are required or permitted by law. Our mailing address is : CIBC CASL Unsubscribe, CIBC Head Office, 81 Bay St., CIBC Square, Toronto, Ontario Canada M5J 0E7

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NETGEAR NAS DUO 2110 setup on WIN11platform
by MikeH May 11, 2024

May 11, 2024

Hi, I have had this NAS for many years it it has worked like a charm on my windowsXP 0S laptop. Recently I purchase a new Asustor laptop running WIn11 and I cannot get it to work on this PC. The device shows as storage device on my home screen and in file explorer with its IP & I can sucesfully ping it. When I try to login with its IP , I receive an error message which says “….this browser (google) has no support for this interface with an error message code Ox0004002” Searching on the web indicates this may be because a communications protocol TLS 1.0 or 1.1 is no longer supported, or advised , on the windows 10/11 platform which the NAS’s software uses. Has anyone else had this issue and is there a solution or work round. I have done a factory reset on the NAS. Thanks MikeH Sent from my iPad

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Split Drive Setup
by Mike May 9, 2024

May 9, 2024

Hi, I’m using a new 64bit windows11 platform to install python 3.11.3 which I download from the official Python site. I ran the setup programme on my system pc disk C:\ , but changed the location for the bulk of the python files to an external usb HDD to (P:\python\python_3_11_3) , so as not to use a large amount of space on my system drive & have a portable python facility on the USB HDD. The installation completed without any errors and placed an icon on my pc to launch the python command window , which works. I created a one line test script on the pc (print (“hello python !!”) with a ‘py’ file type label and then double clicked that file but nothing happened .? Can anyone help to solve this problem or indicate other things I need to done, or should have done ? , on my PC or my external HDD MikeH Sent from my iPhone (TalkTalk)

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ttk style question - solved
by Phil May 9, 2024

May 9, 2024

Sorry to have bothered everyone, I just stumbled upon the answer. -- Regards, Phil

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