def avg_col(arr, base_check=True, dim_check=False):
"""Return the arithmetic mean of the given columns (contained subarrays)."""
checker = checks.ValidCheck(arr)
if not checker.run_checks(base_check, dim_check):
return
width, height = len(arr), len(arr[0])
avg_arr = []
for y in range(height):
temp_arr = []
for x in range(width):
temp_arr.append(arr[x][y])
temp_avg = sum(temp_arr) / len(temp_arr)
avg_arr.append(temp_avg)
return avg_arr
def del_row(arr, row, base_check=True):
"""Return a new list of lists with the indicated row deleted."""
checker = checks.ValidCheck(arr)
if not checker.run_checks(base_check):
return
width, height = len(arr), len(arr[0])
try:
row = int(row)
except ValueError:
print(f"input row index {row} not coercible to type int. Exiting")
return
if not 0 <= row < height:
print(
f"row index {row} is invalid for an input array with {width} columns and {height} rows. Exiting"
)
return
arr_out = [[] for i in range(width)]
for y in range(height):
if y != row:
arr_row = extractor(arr, y)
appender(arr_out, arr_row, deep=False)
return arr_out
def extract_row(arr, row, base_check=True):
"""Return the indicated row (a list of the values at the given index of all subarrays)."""
checker = checks.ValidCheck(arr)
if not checker.run_checks(base_check):
return
return extractor(arr, row)
def append_row(arr, row, base_check=True, deep=True):
"""Return a new list of lists with the indicated row (list) appended."""
checker = checks.ValidCheck(arr)
if not checker.run_checks(base_check):
return
return appender(arr, row, deep)