boost python C++ function calling another function error
Date : March 29 2020, 07:55 AM
will be helpful for those in need You are passing the lists by value, which requires a copy constructor. The error message is telling you that no copy constructor has been provided for list. The solution therefore is to pass the list by reference: double getlistvalue(const boost::python::list &l, int index)
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Error occurred when python function calling GRASS GIS module and another python function of the same kind
Date : March 29 2020, 07:55 AM
will help you Solution: Have the from import grass.script as g in the top level imports i.e. file 1 (function A - v_edit.py) will be: import os
import sys
import numpy
from GRASSGIS_conn import GRASSGIS_conn
import grass.script as g
def v_edit(map_name, tool, thresh, coords):
cor = [",".join(item) for item in coords.astype(str)]
no_of_cors = len(cor)
i = 0
while i <= no_of_cors - 1:
g.run_command('v.edit', map = map_name, tool = tool, threshold = thresh, coords = cor[i])
i = i + 1
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Python: Calling a function inside another function with returned values: Error Handling?
Date : March 29 2020, 07:55 AM
it should still fix some issue Switch the if regexp_object.match(input_time) for an if not regexp_object.match(input_time), and switch the logic around too: def function1(input_time):
"""convert time from 24hr format
into 12hours, minutes, period"""
period_type = {'AM': 'before midday', 'PM': 'after midday'}
regexp_object = re.compile(r'^(([01]\d|2[0-3]):([0-5]\d)|23:59)$')
# Switch to checking if it isn't valid instead, and exit early if that's the case
if not regexp_object.match(input_time):
print("{0} doesn't match required format 00:00 to 23:59"
.format(input_time))
exit(-1)
# Since we already returned if the regex didn't match, we know if it reaches this point it'll match
try:
time_object = time.strptime(input_time, '%H:%M')
suffix = time.strftime('%p', time_object)
hours = int(time.strftime('%I', time_object))
minutes = time_object[4]
period = period_type.get(suffix)
print("{0}:{1} {2}".format(hours, str(minutes).zfill(2), period))
return hours, minutes, period
except ValueError as err:
print(err)
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Error while calling C DLL function from Python
Date : March 29 2020, 07:55 AM
Does that help Listing [Python 3.Docs]: ctypes - A foreign function library for Python. So, you want to pass an array to a function that expects a pointer. For that case, ctypes.cast is required: funcao(a, b, input_1, output_1)
funcao(a, b, cast(input_1, POINTER(c_double)), cast(output_1, POINTER(c_double)))
# ...
input_1 = c_double(5)
output_1 = c_double(0)
funcao(a, b, byref(input_1), byref(output_1))
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Name error in calling a function in python
Tag : python , By : arbeitandy
Date : March 29 2020, 07:55 AM
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