Minor tqdm optim
_The documentation is not available anymore as the PR was closed or merged._ <details>
<summary>Show benchmarks</summary>

PyArrow==8.0.0

<details>
<summary>Show updated benchmarks!</summary>

### Benchmark: benchmark_array_xd.json

| metric | read_batch_formatted_as_numpy after write_array2d | read_batch_formatted_as_numpy after write_flattened_sequence | read_batch_formatted_as_numpy after write_nested_sequence | read_batch_unformated after write_array2d | read_batch_unformated after write_flattened_sequence | read_batch_unformated after write_nested_sequence | read_col_formatted_as_numpy after write_array2d | read_col_formatted_as_numpy after write_flattened_sequence | read_col_formatted_as_numpy after write_nested_sequence | read_col_unformated after write_array2d | read_col_unformated after write_flattened_sequence | read_col_unformated after write_nested_sequence | read_formatted_as_numpy after write_array2d | read_formatted_as_numpy after write_flattened_sequence | read_formatted_as_numpy after write_nested_sequence | read_unformated after write_array2d | read_unformated after write_flattened_sequence | read_unformated after write_nested_sequence | write_array2d | write_flattened_sequence | write_nested_sequence |
|--------|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| new / old (diff) | 0.006917 / 0.011353 (-0.004436) | 0.004803 / 0.011008 (-0.006205) | 0.097082 / 0.038508 (0.058574) | 0.035105 / 0.023109 (0.011996) | 0.325911 / 0.275898 (0.050013) | 0.371858 / 0.323480 (0.048378) | 0.006451 / 0.007986 (-0.001534) | 0.004421 / 0.004328 (0.000093) | 0.075738 / 0.004250 (0.071487) | 0.053624 / 0.037052 (0.016572) | 0.332661 / 0.258489 (0.074172) | 0.372729 / 0.293841 (0.078888) | 0.028279 / 0.128546 (-0.100267) | 0.009318 / 0.075646 (-0.066328) | 0.328505 / 0.419271 (-0.090766) | 0.066962 / 0.043533 (0.023429) | 0.316863 / 0.255139 (0.061724) | 0.344296 / 0.283200 (0.061096) | 0.120575 / 0.141683 (-0.021108) | 1.457867 / 1.452155 (0.005712) | 1.597361 / 1.492716 (0.104644) |

### Benchmark: benchmark_getitem\_100B.json

| metric | get_batch_of\_1024\_random_rows | get_batch_of\_1024\_rows | get_first_row | get_last_row |
|--------|---|---|---|---|
| new / old (diff) | 0.296399 / 0.018006 (0.278392) | 0.507196 / 0.000490 (0.506706) | 0.003036 / 0.000200 (0.002836) | 0.000088 / 0.000054 (0.000034) |

### Benchmark: benchmark_indices_mapping.json

| metric | select | shard | shuffle | sort | train_test_split |
|--------|---|---|---|---|---|
| new / old (diff) | 0.028535 / 0.037411 (-0.008876) | 0.110566 / 0.014526 (0.096040) | 0.122078 / 0.176557 (-0.054479) | 0.182926 / 0.737135 (-0.554210) | 0.125546 / 0.296338 (-0.170792) |

### Benchmark: benchmark_iterating.json

| metric | read 5000 | read 50000 | read_batch 50000 10 | read_batch 50000 100 | read_batch 50000 1000 | read_formatted numpy 5000 | read_formatted pandas 5000 | read_formatted tensorflow 5000 | read_formatted torch 5000 | read_formatted_batch numpy 5000 10 | read_formatted_batch numpy 5000 1000 | shuffled read 5000 | shuffled read 50000 | shuffled read_batch 50000 10 | shuffled read_batch 50000 100 | shuffled read_batch 50000 1000 | shuffled read_formatted numpy 5000 | shuffled read_formatted_batch numpy 5000 10 | shuffled read_formatted_batch numpy 5000 1000 |
|--------|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| new / old (diff) | 0.426952 / 0.215209 (0.211742) | 4.255608 / 2.077655 (2.177953) | 2.063865 / 1.504120 (0.559745) | 1.867198 / 1.541195 (0.326004) | 2.058236 / 1.468490 (0.589746) | 0.525885 / 4.584777 (-4.058892) | 3.723607 / 3.745712 (-0.022105) | 1.919144 / 5.269862 (-3.350718) | 1.235308 / 4.565676 (-3.330368) | 0.066423 / 0.424275 (-0.357852) | 0.012045 / 0.007607 (0.004438) | 0.528432 / 0.226044 (0.302388) | 5.268723 / 2.268929 (2.999794) | 2.504071 / 55.444624 (-52.940553) | 2.137999 / 6.876477 (-4.738477) | 2.229987 / 2.142072 (0.087914) | 0.641739 / 4.805227 (-4.163488) | 0.142635 / 6.500664 (-6.358029) | 0.065649 / 0.075469 (-0.009820) |

### Benchmark: benchmark_map_filter.json

| metric | filter | map fast-tokenizer batched | map identity | map identity batched | map no-op batched | map no-op batched numpy | map no-op batched pandas | map no-op batched pytorch | map no-op batched tensorflow |
|--------|---|---|---|---|---|---|---|---|---|
| new / old (diff) | 1.182710 / 1.841788 (-0.659078) | 15.339777 / 8.074308 (7.265469) | 14.722308 / 10.191392 (4.530916) | 0.145914 / 0.680424 (-0.534510) | 0.017861 / 0.534201 (-0.516340) | 0.393092 / 0.579283 (-0.186191) | 0.431179 / 0.434364 (-0.003185) | 0.485712 / 0.540337 (-0.054625) | 0.602634 / 1.386936 (-0.784302) |

</details>
PyArrow==latest

<details>
<summary>Show updated benchmarks!</summary>

### Benchmark: benchmark_array_xd.json

| metric | read_batch_formatted_as_numpy after write_array2d | read_batch_formatted_as_numpy after write_flattened_sequence | read_batch_formatted_as_numpy after write_nested_sequence | read_batch_unformated after write_array2d | read_batch_unformated after write_flattened_sequence | read_batch_unformated after write_nested_sequence | read_col_formatted_as_numpy after write_array2d | read_col_formatted_as_numpy after write_flattened_sequence | read_col_formatted_as_numpy after write_nested_sequence | read_col_unformated after write_array2d | read_col_unformated after write_flattened_sequence | read_col_unformated after write_nested_sequence | read_formatted_as_numpy after write_array2d | read_formatted_as_numpy after write_flattened_sequence | read_formatted_as_numpy after write_nested_sequence | read_unformated after write_array2d | read_unformated after write_flattened_sequence | read_unformated after write_nested_sequence | write_array2d | write_flattened_sequence | write_nested_sequence |
|--------|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| new / old (diff) | 0.006792 / 0.011353 (-0.004561) | 0.005118 / 0.011008 (-0.005890) | 0.073440 / 0.038508 (0.034932) | 0.033751 / 0.023109 (0.010642) | 0.389243 / 0.275898 (0.113345) | 0.397083 / 0.323480 (0.073603) | 0.005989 / 0.007986 (-0.001997) | 0.004289 / 0.004328 (-0.000040) | 0.073228 / 0.004250 (0.068977) | 0.053490 / 0.037052 (0.016438) | 0.396070 / 0.258489 (0.137581) | 0.415134 / 0.293841 (0.121293) | 0.028649 / 0.128546 (-0.099897) | 0.009159 / 0.075646 (-0.066487) | 0.080813 / 0.419271 (-0.338458) | 0.048200 / 0.043533 (0.004667) | 0.388009 / 0.255139 (0.132870) | 0.382174 / 0.283200 (0.098975) | 0.107807 / 0.141683 (-0.033876) | 1.467276 / 1.452155 (0.015121) | 1.568091 / 1.492716 (0.075375) |

### Benchmark: benchmark_getitem\_100B.json

| metric | get_batch_of\_1024\_random_rows | get_batch_of\_1024\_rows | get_first_row | get_last_row |
|--------|---|---|---|---|
| new / old (diff) | 0.328030 / 0.018006 (0.310024) | 0.498058 / 0.000490 (0.497568) | 0.002513 / 0.000200 (0.002313) | 0.000099 / 0.000054 (0.000045) |

### Benchmark: benchmark_indices_mapping.json

| metric | select | shard | shuffle | sort | train_test_split |
|--------|---|---|---|---|---|
| new / old (diff) | 0.029835 / 0.037411 (-0.007576) | 0.113859 / 0.014526 (0.099333) | 0.130813 / 0.176557 (-0.045743) | 0.183646 / 0.737135 (-0.553490) | 0.136561 / 0.296338 (-0.159777) |

### Benchmark: benchmark_iterating.json

| metric | read 5000 | read 50000 | read_batch 50000 10 | read_batch 50000 100 | read_batch 50000 1000 | read_formatted numpy 5000 | read_formatted pandas 5000 | read_formatted tensorflow 5000 | read_formatted torch 5000 | read_formatted_batch numpy 5000 10 | read_formatted_batch numpy 5000 1000 | shuffled read 5000 | shuffled read 50000 | shuffled read_batch 50000 10 | shuffled read_batch 50000 100 | shuffled read_batch 50000 1000 | shuffled read_formatted numpy 5000 | shuffled read_formatted_batch numpy 5000 10 | shuffled read_formatted_batch numpy 5000 1000 |
|--------|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| new / old (diff) | 0.438901 / 0.215209 (0.223692) | 4.376426 / 2.077655 (2.298771) | 2.220932 / 1.504120 (0.716812) | 2.043585 / 1.541195 (0.502390) | 2.161383 / 1.468490 (0.692893) | 0.523224 / 4.584777 (-4.061553) | 3.730589 / 3.745712 (-0.015123) | 1.859602 / 5.269862 (-3.410260) | 1.073415 / 4.565676 (-3.492261) | 0.066363 / 0.424275 (-0.357912) | 0.012491 / 0.007607 (0.004884) | 0.542052 / 0.226044 (0.316008) | 5.426246 / 2.268929 (3.157318) | 2.673884 / 55.444624 (-52.770740) | 2.372611 / 6.876477 (-4.503865) | 2.482216 / 2.142072 (0.340143) | 0.705669 / 4.805227 (-4.099558) | 0.141075 / 6.500664 (-6.359589) | 0.065339 / 0.075469 (-0.010130) |

### Benchmark: benchmark_map_filter.json

| metric | filter | map fast-tokenizer batched | map identity | map identity batched | map no-op batched | map no-op batched numpy | map no-op batched pandas | map no-op batched pytorch | map no-op batched tensorflow |
|--------|---|---|---|---|---|---|---|---|---|
| new / old (diff) | 1.316403 / 1.841788 (-0.525385) | 15.832870 / 8.074308 (7.758562) | 13.307045 / 10.191392 (3.115653) | 0.147258 / 0.680424 (-0.533166) | 0.017966 / 0.534201 (-0.516235) | 0.414396 / 0.579283 (-0.164887) | 0.431801 / 0.434364 (-0.002563) | 0.465483 / 0.540337 (-0.074855) | 0.577850 / 1.386936 (-0.809086) |

</details>
</details>

![](https://cml.dev/watermark.png#c795c7e332a7c850c3e725f2034d4894b5e314f7 "CML watermark")
 <details>
<summary>Show benchmarks</summary>

PyArrow==8.0.0

<details>
<summary>Show updated benchmarks!</summary>

### Benchmark: benchmark_array_xd.json

| metric | read_batch_formatted_as_numpy after write_array2d | read_batch_formatted_as_numpy after write_flattened_sequence | read_batch_formatted_as_numpy after write_nested_sequence | read_batch_unformated after write_array2d | read_batch_unformated after write_flattened_sequence | read_batch_unformated after write_nested_sequence | read_col_formatted_as_numpy after write_array2d | read_col_formatted_as_numpy after write_flattened_sequence | read_col_formatted_as_numpy after write_nested_sequence | read_col_unformated after write_array2d | read_col_unformated after write_flattened_sequence | read_col_unformated after write_nested_sequence | read_formatted_as_numpy after write_array2d | read_formatted_as_numpy after write_flattened_sequence | read_formatted_as_numpy after write_nested_sequence | read_unformated after write_array2d | read_unformated after write_flattened_sequence | read_unformated after write_nested_sequence | write_array2d | write_flattened_sequence | write_nested_sequence |
|--------|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| new / old (diff) | 0.006368 / 0.011353 (-0.004985) | 0.004274 / 0.011008 (-0.006734) | 0.098799 / 0.038508 (0.060291) | 0.029096 / 0.023109 (0.005986) | 0.308009 / 0.275898 (0.032111) | 0.345701 / 0.323480 (0.022221) | 0.005312 / 0.007986 (-0.002674) | 0.003435 / 0.004328 (-0.000894) | 0.075912 / 0.004250 (0.071662) | 0.041993 / 0.037052 (0.004941) | 0.320075 / 0.258489 (0.061586) | 0.347506 / 0.293841 (0.053665) | 0.025456 / 0.128546 (-0.103091) | 0.008461 / 0.075646 (-0.067185) | 0.322823 / 0.419271 (-0.096448) | 0.044650 / 0.043533 (0.001117) | 0.314118 / 0.255139 (0.058979) | 0.333436 / 0.283200 (0.050237) | 0.093811 / 0.141683 (-0.047871) | 1.464464 / 1.452155 (0.012310) | 1.548098 / 1.492716 (0.055382) |

### Benchmark: benchmark_getitem\_100B.json

| metric | get_batch_of\_1024\_random_rows | get_batch_of\_1024\_rows | get_first_row | get_last_row |
|--------|---|---|---|---|
| new / old (diff) | 0.015905 / 0.018006 (-0.002101) | 0.427847 / 0.000490 (0.427357) | 0.007600 / 0.000200 (0.007400) | 0.000421 / 0.000054 (0.000366) |

### Benchmark: benchmark_indices_mapping.json

| metric | select | shard | shuffle | sort | train_test_split |
|--------|---|---|---|---|---|
| new / old (diff) | 0.024530 / 0.037411 (-0.012882) | 0.099907 / 0.014526 (0.085381) | 0.107282 / 0.176557 (-0.069275) | 0.168332 / 0.737135 (-0.568804) | 0.109875 / 0.296338 (-0.186464) |

### Benchmark: benchmark_iterating.json

| metric | read 5000 | read 50000 | read_batch 50000 10 | read_batch 50000 100 | read_batch 50000 1000 | read_formatted numpy 5000 | read_formatted pandas 5000 | read_formatted tensorflow 5000 | read_formatted torch 5000 | read_formatted_batch numpy 5000 10 | read_formatted_batch numpy 5000 1000 | shuffled read 5000 | shuffled read 50000 | shuffled read_batch 50000 10 | shuffled read_batch 50000 100 | shuffled read_batch 50000 1000 | shuffled read_formatted numpy 5000 | shuffled read_formatted_batch numpy 5000 10 | shuffled read_formatted_batch numpy 5000 1000 |
|--------|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| new / old (diff) | 0.451064 / 0.215209 (0.235855) | 4.491434 / 2.077655 (2.413779) | 2.253251 / 1.504120 (0.749131) | 2.086740 / 1.541195 (0.545545) | 2.133288 / 1.468490 (0.664798) | 0.558801 / 4.584777 (-4.025976) | 3.463525 / 3.745712 (-0.282187) | 1.747657 / 5.269862 (-3.522205) | 1.005465 / 4.565676 (-3.560211) | 0.068341 / 0.424275 (-0.355934) | 0.012521 / 0.007607 (0.004914) | 0.567002 / 0.226044 (0.340957) | 5.689529 / 2.268929 (3.420601) | 2.700562 / 55.444624 (-52.744062) | 2.384888 / 6.876477 (-4.491589) | 2.503160 / 2.142072 (0.361088) | 0.667107 / 4.805227 (-4.138120) | 0.137253 / 6.500664 (-6.363412) | 0.068300 / 0.075469 (-0.007170) |

### Benchmark: benchmark_map_filter.json

| metric | filter | map fast-tokenizer batched | map identity | map identity batched | map no-op batched | map no-op batched numpy | map no-op batched pandas | map no-op batched pytorch | map no-op batched tensorflow |
|--------|---|---|---|---|---|---|---|---|---|
| new / old (diff) | 1.202916 / 1.841788 (-0.638872) | 14.163393 / 8.074308 (6.089085) | 14.402463 / 10.191392 (4.211071) | 0.145273 / 0.680424 (-0.535151) | 0.016996 / 0.534201 (-0.517205) | 0.363520 / 0.579283 (-0.215763) | 0.421595 / 0.434364 (-0.012769) | 0.438413 / 0.540337 (-0.101925) | 0.508615 / 1.386936 (-0.878321) |

</details>
PyArrow==latest

<details>
<summary>Show updated benchmarks!</summary>

### Benchmark: benchmark_array_xd.json

| metric | read_batch_formatted_as_numpy after write_array2d | read_batch_formatted_as_numpy after write_flattened_sequence | read_batch_formatted_as_numpy after write_nested_sequence | read_batch_unformated after write_array2d | read_batch_unformated after write_flattened_sequence | read_batch_unformated after write_nested_sequence | read_col_formatted_as_numpy after write_array2d | read_col_formatted_as_numpy after write_flattened_sequence | read_col_formatted_as_numpy after write_nested_sequence | read_col_unformated after write_array2d | read_col_unformated after write_flattened_sequence | read_col_unformated after write_nested_sequence | read_formatted_as_numpy after write_array2d | read_formatted_as_numpy after write_flattened_sequence | read_formatted_as_numpy after write_nested_sequence | read_unformated after write_array2d | read_unformated after write_flattened_sequence | read_unformated after write_nested_sequence | write_array2d | write_flattened_sequence | write_nested_sequence |
|--------|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| new / old (diff) | 0.006419 / 0.011353 (-0.004934) | 0.004346 / 0.011008 (-0.006662) | 0.076356 / 0.038508 (0.037848) | 0.029370 / 0.023109 (0.006260) | 0.371046 / 0.275898 (0.095148) | 0.398279 / 0.323480 (0.074799) | 0.005258 / 0.007986 (-0.002728) | 0.003528 / 0.004328 (-0.000800) | 0.076787 / 0.004250 (0.072537) | 0.041575 / 0.037052 (0.004522) | 0.362319 / 0.258489 (0.103830) | 0.402134 / 0.293841 (0.108293) | 0.025633 / 0.128546 (-0.102913) | 0.008826 / 0.075646 (-0.066820) | 0.082380 / 0.419271 (-0.336892) | 0.041655 / 0.043533 (-0.001878) | 0.357583 / 0.255139 (0.102444) | 0.383486 / 0.283200 (0.100287) | 0.093682 / 0.141683 (-0.048001) | 1.488522 / 1.452155 (0.036367) | 1.576090 / 1.492716 (0.083373) |

### Benchmark: benchmark_getitem\_100B.json

| metric | get_batch_of\_1024\_random_rows | get_batch_of\_1024\_rows | get_first_row | get_last_row |
|--------|---|---|---|---|
| new / old (diff) | 0.185556 / 0.018006 (0.167550) | 0.431345 / 0.000490 (0.430855) | 0.002290 / 0.000200 (0.002090) | 0.000082 / 0.000054 (0.000027) |

### Benchmark: benchmark_indices_mapping.json

| metric | select | shard | shuffle | sort | train_test_split |
|--------|---|---|---|---|---|
| new / old (diff) | 0.026030 / 0.037411 (-0.011382) | 0.102889 / 0.014526 (0.088364) | 0.109541 / 0.176557 (-0.067015) | 0.161050 / 0.737135 (-0.576085) | 0.113525 / 0.296338 (-0.182814) |

### Benchmark: benchmark_iterating.json

| metric | read 5000 | read 50000 | read_batch 50000 10 | read_batch 50000 100 | read_batch 50000 1000 | read_formatted numpy 5000 | read_formatted pandas 5000 | read_formatted tensorflow 5000 | read_formatted torch 5000 | read_formatted_batch numpy 5000 10 | read_formatted_batch numpy 5000 1000 | shuffled read 5000 | shuffled read 50000 | shuffled read_batch 50000 10 | shuffled read_batch 50000 100 | shuffled read_batch 50000 1000 | shuffled read_formatted numpy 5000 | shuffled read_formatted_batch numpy 5000 10 | shuffled read_formatted_batch numpy 5000 1000 |
|--------|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| new / old (diff) | 0.445301 / 0.215209 (0.230092) | 4.437320 / 2.077655 (2.359666) | 2.174181 / 1.504120 (0.670061) | 1.977440 / 1.541195 (0.436245) | 2.036323 / 1.468490 (0.567832) | 0.554227 / 4.584777 (-4.030550) | 3.462746 / 3.745712 (-0.282966) | 1.765257 / 5.269862 (-3.504604) | 1.014515 / 4.565676 (-3.551161) | 0.068391 / 0.424275 (-0.355884) | 0.013154 / 0.007607 (0.005546) | 0.546696 / 0.226044 (0.320652) | 5.490628 / 2.268929 (3.221699) | 2.611947 / 55.444624 (-52.832677) | 2.282659 / 6.876477 (-4.593818) | 2.333972 / 2.142072 (0.191899) | 0.663140 / 4.805227 (-4.142087) | 0.137996 / 6.500664 (-6.362668) | 0.069063 / 0.075469 (-0.006407) |

### Benchmark: benchmark_map_filter.json

| metric | filter | map fast-tokenizer batched | map identity | map identity batched | map no-op batched | map no-op batched numpy | map no-op batched pandas | map no-op batched pytorch | map no-op batched tensorflow |
|--------|---|---|---|---|---|---|---|---|---|
| new / old (diff) | 1.332147 / 1.841788 (-0.509641) | 14.781592 / 8.074308 (6.707284) | 13.399190 / 10.191392 (3.207798) | 0.139370 / 0.680424 (-0.541054) | 0.016742 / 0.534201 (-0.517459) | 0.364138 / 0.579283 (-0.215146) | 0.402479 / 0.434364 (-0.031885) | 0.427591 / 0.540337 (-0.112746) | 0.520864 / 1.386936 (-0.866072) |

</details>
</details>

![](https://cml.dev/watermark.png#a8279677b58b93f77995c7da67aea2a04b6a7395 "CML watermark")

Don't create a tqdm progress bar when `disable_tqdm` is passed to `map_nested`.

On my side it sped up some iterable datasets by ~30% when `map_nested` is used extensively to recursively tensorize python dicts.