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Search Results
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Thread: 2.7 Python uninstallation on Mac OS.
Post: RE: 2.7 Python uninstallation on Mac OS.
| i won't touch any of the factory installed software if I were you. You never know which component in the macos relies on python2, leave it be. It doesn't take up much memory anyways. |
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tony1812 |
General Coding Help |
4 |
2,763 |
Sep-30-2018, 11:21 PM |
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Thread: pi3 serial communication
Post: pi3 serial communication
| Hello, I have this two pieces of codes, It is used to communicate between pi 3 and Arduno via HC-0% bluetooth. It was work about a year ago but now I try to use it it stop workin and I can't figure w... |
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tony1812 |
General Coding Help |
0 |
2,149 |
Sep-23-2018, 10:29 PM |
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Thread: finding proper libraries
Post: RE: finding proper libraries
| When I said goole, I meant search engines in general. to be more specific what did people do in the pre search engine age? |
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tony1812 |
News and Discussions |
3 |
2,282 |
Sep-18-2018, 06:24 PM |
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Thread: finding proper libraries
Post: finding proper libraries
| Hello, today it is relatively easy to find a library to use a function, it is usually no far from a simple google. But in the pre-google age, how do people find that? |
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tony1812 |
News and Discussions |
3 |
2,282 |
Sep-18-2018, 12:46 PM |
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Thread: filter out a string
Post: RE: filter out a string
| Thanks for the reply.
I found the second way is better, nice and succinct. And yes it ought to be the same format. Hopefully the cpu temp never reaches temp=123.4 'C :}
In the first method match.group... |
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tony1812 |
General Coding Help |
4 |
2,968 |
Sep-14-2018, 12:27 PM |
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Thread: filter out a string
Post: filter out a string
| Hello, I use code like this
cpu_temp2 = os.popen("vcgencmd measure_temp").readline()to get the cpu temperture of the pi.It returns a string temp=55.6'C
Now I want to get rid of the temp= and 'C so tha... |
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tony1812 |
General Coding Help |
4 |
2,968 |
Sep-13-2018, 11:20 PM |
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Thread: strange python3 issue
Post: strange python3 issue
| Hello, I am learning tkinter, in the process, I run into a strange problem. I have two python3 simple scripts, one is named window_class.py the other named canvas1.py. The problem is I set up the wind... |
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tony1812 |
General Coding Help |
1 |
2,233 |
Sep-06-2018, 12:07 AM |
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Thread: Missing title bar
Post: Missing title bar
| Hello, I have proterface the 3d Printing software installed on my pi3. I put the script put in /profile so it starts as soon as the pi boots up. It starts up just fine. However, the title bar in the w... |
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tony1812 |
GUI |
0 |
2,098 |
Jan-30-2018, 01:03 PM |
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Thread: opencv help
Post: opencv help
| Hello, I compiled opencv successfully, so I thought, but when I run a script, I got this opencv error:
OpenCV Error: Unspecified error (The function is not implemented. Rebuild the library with Window... |
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tony1812 |
General Coding Help |
0 |
2,594 |
Jan-21-2018, 06:54 AM |
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Thread: opencv without virtualenv
Post: opencv without virtualenv
| Hello, I followed this tutorial, https://www.pyimagesearch.com/2017/09/04...pberry-pi/ successfully installed opencv on the pi3, after using it for a while, I found the virtualenv is more a annoyance ... |
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tony1812 |
General Coding Help |
0 |
3,052 |
Jan-20-2018, 12:42 AM |
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Thread: pronterface on 3.5 " LCD
Post: pronterface on 3.5 " LCD
| Hello, I am pretty new to python. I use a pi3 to connect to my 3D printer, I insalled proterface on it, It works find on HDMI.screen Now I have a 3.5" LCD for the pi3, I opened pronterface, only part... |
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tony1812 |
GUI |
0 |
2,005 |
Jan-17-2018, 09:33 PM |
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Thread: python data format to c data format
Post: python data format to c data format
| Hello, I am writing a python code to write data to the serial port for Anduino to receive.
Pi side
pos_i=50 #degree in the range of 0-180
print(pos_i)
pos_b=pos_i.to_bytes(1, 'little') # squeeze the... |
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tony1812 |
General Coding Help |
1 |
3,044 |
Dec-01-2017, 10:58 PM |
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Thread: free python editor for mac
Post: free python editor for mac
| Hello, I am looking for a free python editor for my Mac, I mean a truly free one, not those bogus "free" trial then ask for money.
does anyone have a suggestion? Thanks. |
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tony1812 |
General Coding Help |
5 |
4,929 |
Sep-29-2017, 12:11 PM |
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Thread: find a character in a string in python3
Post: RE: find a character in a string in python3
| Thanks for the reply.
when I use re.search, it returns something like this: <_sre.SRE_Match object; span=(6, 7), match='w'>.
Basically, I have serveral sensors output data throurgh serial to th... |
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tony1812 |
General Coding Help |
6 |
6,349 |
Sep-27-2017, 11:51 AM |
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Thread: find a character in a string in python3
Post: RE: find a character in a string in python3
| I am just wondering if there are some kinds of string functions in python like in php or javascript |
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tony1812 |
General Coding Help |
6 |
6,349 |
Sep-26-2017, 11:44 PM |
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Thread: find a character in a string in python3
Post: find a character in a string in python3
| Hello, how do I find a specific character in a string? for example, str="Hello world"
I need it to ba able to return the character "w", not just its index. Thanks. |
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tony1812 |
General Coding Help |
6 |
6,349 |
Sep-26-2017, 10:31 PM |
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Thread: get last row id in pymysql
Post: get last row id in pymysql
| Hello, I am pretty new to python
I am wondering is this is the correct syntax to get the last row id in a my=sql mysql table?
cur=conn.cursor()
sql="SELECT row_id FROM test_tb ORDER BY row_id DESC LIM... |
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tony1812 |
General Coding Help |
1 |
11,154 |
Sep-26-2017, 10:04 PM |
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Thread: pymysql question
Post: pymysql question
| Hello, I am totally new to python.
I am learning to use pymysql to retrive daa from mysql, I have this code:
#!/usr/bin/python3
import pymysql
#make a connection to mysql
conn = pymysql.connect(
... |
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tony1812 |
General Coding Help |
1 |
2,883 |
Sep-26-2017, 12:24 AM |
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Thread: pymysql on macos seirra
Post: RE: pymysql on macos seirra
| Thank you for the replay.
Actully, I just realised that pymysql are both /usr/local/lib/python3.6/site-packages/ and /Library/Python/2.7/site-packages/ directories.
However when I do import pymysql, t... |
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tony1812 |
General Coding Help |
5 |
4,541 |
Sep-17-2017, 12:56 PM |
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Thread: pymysql on macos seirra
Post: RE: pymysql on macos seirra
| Thanks for the reply.
I am not sure I understand what you mean. Anyhow, I wrote a python3 script that uses pymysql but it was running in Linux. Now I want it to be able to run on my Mac as well, I am ... |
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tony1812 |
General Coding Help |
5 |
4,541 |
Sep-16-2017, 01:52 PM |
