Unused variable found PYL-W0612
Anti-pattern
Major
3 months ago
—
3 months old
Unused variable 'i'
49 rows.append(dict(uniqueid=d["uniqueid"], plotid=d["plotid"]))
50
51 plotipm = pd.DataFrame(rows)
52 for i, row in plotipm.iterrows():53 df2 = plotdf[
54 (plotdf["uniqueid"] == row["uniqueid"])
55 & (plotdf["plotid"] == row["plotid"])
Description
An unused variable takes up space in the code, and can lead to confusion, and it should be removed. If this variable is necessary, name the variable _ to indicate that it will be unused, or start the name with unused or _unused.
Bad practice
def update():
for i in range(10): # Usused variable `i`
time.sleep(0.01)
display_result()
Preferred:
def update():
for _ in range(10):
time.sleep(0.01)
display_result()