I am reading serial data and writing to a csv file using a while loop. I want the user to be able to kill the while loop once they feel they have collected enough data.
while True:
#do a bunch of serial stuff
#if the user presses the ‘esc’ or ‘return’ key:
break
I have done something like this using opencv, but it doesn’t seem to….
Many Python programmers are probably unaware that the syntax of while loops and for loops includes an optional else: clause:
for val in iterable:
do_something(val)
else:
clean_up()
The body of the else clause is a good place for certain kinds of clean-up actions, and is executed on normal termination of the loop: I.e., exiting the loop wi….
I have a list consisting of like 20000 lists. I use each list’s 3rd element as a flag. I want to do some operations on this list as long as at least one element’s flag is 0, it’s like:
my_list = [[“a”, “b”, 0], [“c”, “d”, 0], [“e”, “f”, 0], …..]
In the beginning, all flags are 0. I use a while loop to check if at least one element’s flag is 0:
….
I am trying to plot some data from a camera in real time using OpenCV. However, the real-time plotting (using matplotlib) doesn’t seem to be working.
I’ve isolated the problem into this simple example:
fig = plt.figure()
plt.axis([0, 1000, 0, 1])
i = 0
x = list()
y = list()
while i < 1000: temp_y = np.random.random() x.append(i) y.ap....
I need to emulate a do-while loop in a Python program. Unfortunately, the following straightforward code does not work:
list_of_ints = [ 1, 2, 3 ]
iterator = list_of_ints.__iter__()
element = None
while True:
if element:
print element
try:
element = iterator.next()
except StopIteration:
break
print “done”
Instead of “1,2,3,do….