I am getting "list indices must be integers or slices, not tuple" error while trying to generate list from list of tuples. list of tuples have the following structure:

[(29208, 8, 8, 8), (29209, 8, 8, 8), (29210, 8, 8, 8), (29211, 8, 8, 8)]

The first element in the tuple is a time series, other elements are state of some variables.

The loop for converting from list of tuples to simple list is following:

TimeAxis = []for n in lst:TimeAxis.append(lst[n][0])

Where lst has format as described above. For some reason it throws an error:

Traceback (most recent call last):File "X:\Temp\XXX_python_graph\RTT_Plot.py", line 30, in <module>Time.append(lst[n][0])
TypeError: list indices must be integers or slices, not tuple

I understand this is novice question, but other solutions on stackoverflow do not work. Thanks in advance.

Python's for loop is a Foreach construct; you iterate over the elements of the list, not an index.

So n is one of the tuples from lst, not an index. Use it directly:

for n in lst:TimeAxis.append(n[0])

You could simplify your code by using a list comprehension:

TimeAxis = [tup[0] for tup in lst]