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Novus Examples
csv24.9 KB

Wide CSV — 1000 Columns

A CSV with 1000 columns and a handful of rows — a stress test for parsers, spreadsheet importers, and databases with column limits or per-row buffering assumptions. Deterministic (fixed seed).

Preview — first 7 linescsv
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2,619,214,554,946,275,996,649,946,429,60,328,12,503,796,94,164,132,964,499,462,448,756,666,497,852,966,949,341,892,604,803,183,790,965,218,507,861,323,902,586,380,253,370,749,58,868,175,239,667,348,19,657,748,886,616,969,240,964,898,584,386,817,734,900,136,248,198,459,567,61,852,33,953,663,22,898,191,399,474,616,922,973,490,349,940,270,704,497,741,218,98,73,543,726,865,135,79,516,826,786,22,554,671,731,337,157,593,176,789,225,340,223,880,669,507,760,761,664,635,190,516,718,945,394,728,407,212,409,254,945,499,703,273,507,642,558,667,454,488,924,488,445,24,275,5,531,890,191,92,22,924,405,284,357,459,764,979,355,611,53,310,964,630,250,469,850,651,15,462,601,834,101,429,404,742,868,882,32,860,112,989,697,139,929,954,683,909,886,436,80,353,743,785,407,222,230,470,493,947,499,771,919,761,11,517,473,626,912,781,897,468,96,264,568,873,943,208,824,642,815,815,741,464,476,721,877,284,528,349,924,917,185,119,603,311,410,385,734,285,60,804,689,506,765,987,242,351,572,182,721,893,341,444,585,642,700,586,679,5,937,267,74,145,347,923,453,369,748,514,472,207,479,387,339,199,542,492,110,936,472,63,108,471,100,418,94,539,928,852,62,559,582,684,171,695,566,392,164,802,266,251,931,948,827,966,604,779,306,707,289,965,662,839,874,447,715,982,515,673,982,968,963,109,285,543,159,668,860,269,291,812,587,776,961,35,860,611,748,507,541,58,172,78,646,879,329,256,75,333,335,336,447,409,253,680,144,826,512,536,673,867,651,592,28,106,634,191,395,874,727,322,340,9,375,56,263,360,449,984,731,906,221,18,842,896,500,683,840,392,133,631,891,286,988,516,307,796,443,626,403,133,256,697,924,686,337,977,388,686,891,650,632,939,138,72,873,378,895,464,983,389,335,141,541,841,690,177,984,190,960,814,549,303,632,886,357,337,260,116,229,947,715,387,226,201,135,253,392,882,229,79,7,201,757,893,243,755,62,494,222,757,993,41,38,385,496,57,571,283,173,208,667,226,507,735,624,862,626,219,901,815,790,657,499,986,506,42,229,733,434,447,822,539,985,988,627,571,346,730,312,370,694,513,958,480,883,284,201,344,862,74,243,289,649,92,874,904,446,981,263,663,558,28,6,108,611,360,675,477,151,540,372,148,324,829,888,70,340,564,109,235,470,446,264,839,285,878,284,317,149,809,193,921,889,210,736,420,131,287,599,312,368,57,721,475,794,821,629,545,19,260,904,969,450,904,511,427,221,287,261,811,671,16,945,722,909,818,845,327,839,428,594,942,283,649,386,395,127,283,670,732,730,125,457,957,248,426,752,705,388,248,812,115,230,530,95,410,978,573,382,204,613,290,859,725,991,409,927,507,54,170,258,446,600,219,625,733,29,164,232,831,578,49,176,495,652,189,785,598,345,819,641,726,507,919,928,848,465,844,277,659,557,170,368,391,665,743,30,405,879,190,286,71,422,63,118,601,763,150,328,51,524,366,243,109,12,670,656,2,240,823,180,182,448,497,714,492,335,362,277,949,502,375,709,165,849,141,779,980,759,714,164,365,762,425,211,505,169,300,23,549,723,646,342,942,324,927,608,818,290,504,374,8,435,488,190,115,420,921,164,928,413,606,484,781,664,539,659,567,911,550,787,124,5,116,648,911,329,192,845,972,368,956,767,744,106,710,220,504,689,478,199,814,640,282,720,481,317,962,830,304,510,937,717,678,596,80,368,260,635,26,641,137,175,123,119,593,695,156,153,129,392,192,176,60,309,526,29,353,845,120,175,446,241,686,794,446,708,175,32,588,427,701,437,189,940,522,47,318,1,463,760,768,655,850,358,424,641,477,124,251,264,598,478,532,164,495,564,455,598,690,702,82,85,804,567,77,732,621,685,856,741,82,190,944,466,630,460,465,343,53,513,303,395,491,659,704,627,175,894,226,605,453,583,635,628,208,825,661,407,427,589,436,167,584,242,289,162,167,562,999,388,540,731,784,56,996,691,113,246,434,577,814,303,297,781,65,219,261,995,935,822,549,143,518,470,597,800,198,775,629,236,589,978,733,808,15,771,176,20,807,2,640,366,595,556,738,374,441,858,601,374,451,312,657,844,782,413,150,605,345,447,424,14,267,953,489,453,131,556,602,794,356,537,173,369,663,243,871,520,921,722,521,638,248,626,718,168,153,390,483,681,122,330,455,925,557,788,820
3,782,454,91,75,712,138,878,138,374,835,476,813,640,820,382,939,109,965,208,339,331,639,751,711,388,758,622,307,16,622,933,865,458,301,353,411,536,967,810,631,822,783,154,566,525,288,259,106,817,166,120,397,378,115,442,223,572,610,338,989,334,754,944,293,868,870,552,374,950,824,322,689,743,891,310,618,990,732,364,626,58,274,722,540,372,627,269,796,671,644,367,269,481,179,467,637,516,493,873,755,141,931,290,31,314,999,897,590,952,268,735,352,262,499,740,692,923,219,464,658,847,15,841,333,176,682,567,540,136,850,747,539,849,569,919,254,756,584,548,140,226,124,538,306,565,854,24,597,49,87,113,626,12,988,160,108,222,254,100,774,202,380,660,959,632,57,769,661,814,445,391,493,798,194,875,901,757,668,720,308,567,239,188,414,169,5,908,96,400,824,975,345,906,44,947,852,766,571,893,840,717,491,685,496,335,922,719,160,947,632,218,444,96,688,414,754,516,372,875,691,291,998,121,580,372,20,873,982,640,638,247,480,855,207,719,770,656,549,199,424,407,125,785,65,520,32,452,604,839,476,950,275,55,405,183,900,222,948,520,739,263,528,617,25,689,922,677,340,230,461,789,763,54,564,962,152,354,125,78,158,603,999,141,109,450,670,351,305,338,13,968,946,203,447,214,17,401,651,226,289,444,897,644,691,344,503,536,156,420,513,91,179,237,711,266,913,874,150,109,580,27,42,102,746,372,683,592,109,537,25,182,496,961,569,958,857,798,48,872,323,656,315,813,70,137,939,814,615,885,67,599,560,384,318,288,932,687,882,883,679,173,881,36,703,40,795,744,860,307,837,555,658,410,427,562,769,524,412,340,466,373,792,186,791,770,141,719,312,418,689,101,706,199,873,67,401,353,790,777,289,317,42,262,944,637,121,237,445,759,678,947,278,93,288,233,996,942,232,201,597,983,703,630,225,426,47,307,117,750,83,507,993,40,56,629,811,828,339,53,245,735,5,738,718,763,616,337,917,457,753,201,442,352,303,508,885,690,430,533,22,514,327,775,437,321,387,793,131,248,928,151,526,625,430,881,587,175,103,210,63,507,12,495,659,219,799,916,218,330,698,666,688,148,634,686,983,212,984,124,669,675,776,394,976,750,872,660,158,990,728,665,382,377,906,232,615,307,569,15,250,404,847,706,547,257,4,347,240,60,400,726,583,766,382,993,674,595,219,576,26,927,956,763,442,908,792,375,601,137,292,871,950,967,978,798,978,81,716,913,302,255,169,131,137,560,664,821,49,870,907,200,518,221,367,996,150,229,672,842,324,80,578,626,293,971,682,830,989,989,814,821,249,107,619,353,58,129,553,221,270,50,904,559,849,539,351,842,365,691,998,703,683,484,500,298,996,385,225,566,923,14,140,628,846,185,409,316,852,320,229,459,500,557,591,807,98,332,672,407,387,22,375,935,617,160,904,90,875,478,830,494,109,930,700,957,634,124,504,329,421,351,423,375,948,848,465,730,192,746,832,470,852,783,204,255,284,332,914,16,990,975,670,75,989,382,373,359,131,891,951,350,389,948,593,149,437,457,992,761,111,656,731,641,133,696,266,844,923,864,475,649,255,43,257,281,286,711,642,972,790,767,986,673,517,630,905,337,599,125,955,904,44,943,560,425,817,621,105,42,919,396,395,295,257,125,968,451,214,417,239,999,565,311,566,728,775,519,588,918,853,15,324,216,730,711,240,979,10,580,60,250,992,100,353,359,273,324,206,85,140,831,919,18,376,82,522,527,710,607,379,457,424,716,822,117,171,390,887,388,284,219,957,121,943,356,115,105,207,577,917,816,320,427,271,466,284,418,59,683,901,31,328,645,562,341,510,888,145,553,118,400,321,454,187,971,625,439,715,383,576,754,496,773,520,962,111,996,600,992,926,550,165,197,122,88,940,783,982,776,727,767,243,92,417,703,744,486,166,90,623,69,608,297,413,212,74,465,553,868,858,236,61,754,699,433,756,557,337,834,834,77,657,507,811,786,280,356,208,576,866,301,121,138,758,915,932,685,465,263,841,342,349,149,272,907,569,265,227,260,823,836,561,41,512,846,578,162,271,653,330,795,857,577,646,446,641,268,948,545,135,875,63,800,901,982,932,10,96,508,268,5,575,570,255,438,400,174,975,774,536,282,258,481,578,276,466,80,556,3,279,96,339,475,884,996,110,309,763,826,253,740,556,246,630,806,351,239,411,936,808,882,465,415,224,316,852,222,541,469
4,36,565,819,490,842,284,706,834,246,566,597,695,768,248,897,543,25,463,74,546,248,738,438,60,884,833,725,216,724,219,658,824,511,737,759,255,998,875,172,317,927,220,478,284,281,109,160,459,212,614,98,712,666,216,978,500,821,317,917,312,123,829,60,430,948,242,659,169,816,319,858,137,507,820,459,232,943,368,331,304,820,507,1,597,323,898,217,550,583,61,269,411,370,919,694,771,155,901,616,691,267,698,442,962,685,127,516,981,742,542,975,848,230,66,943,770,440,386,154,658,111,278,653,931,787,627,926,84,195,134,775,38,552,27,989,478,193,127,451,203,127,585,778,940,999,869,298,184,999,794,357,356,501,227,540,88,130,711,6,126,424,770,208,911,130,759,849,571,123,513,26,231,339,946,762,871,10,285,832,474,475,969,720,648,772,748,134,59,305,817,737,81,932,140,982,576,4,643,160,711,125,549,493,527,687,895,717,105,166,710,731,289,941,138,530,799,7,522,784,332,96,48,15,35,154,591,630,212,702,894,457,534,754,197,951,393,571,609,920,825,919,518,280,991,891,137,687,915,52,979,164,329,571,155,423,107,542,92,907,565,369,542,882,514,408,654,417,343,272,363,582,111,799,70,82,621,395,745,610,291,943,613,308,333,619,494,124,368,812,193,985,676,567,416,686,324,68,7,351,807,287,855,506,340,334,719,110,311,131,134,869,736,285,420,191,13,169,778,9,12,938,820,846,290,115,405,354,581,409,258,672,4,737,373,356,704,362,87,868,647,422,109,698,785,701,681,407,618,403,56,903,750,571,444,114,873,179,731,931,182,379,147,876,607,469,307,213,616,483,364,995,748,974,836,47,940,379,520,838,349,476,937,588,459,380,322,898,19,167,952,638,543,837,800,696,108,845,747,758,847,464,900,220,656,303,622,980,108,148,320,250,678,717,54,181,157,529,891,965,596,734,901,967,654,183,961,704,127,805,991,405,212,808,594,324,979,787,322,465,667,395,417,199,74,270,527,991,64,476,145,398,736,10,499,461,75,641,309,892,483,795,528,403,989,454,235,692,55,877,100,955,988,369,879,168,312,333,958,910,12,794,480,315,857,563,843,86,301,866,689,838,597,298,246,525,78,881,376,458,490,555,340,242,359,946,27,199,818,783,264,305,345,116,454,553,618,857,743,634,148,893,984,415,753,284,708,959,521,941,166,672,900,344,135,921,397,420,321,302,726,618,596,296,984,955,436,278,275,338,545,121,917,628,922,597,126,225,851,376,561,357,110,414,524,519,755,540,273,746,179,241,716,475,107,772,203,265,180,858,403,283,662,53,419,988,101,897,810,367,111,316,201,187,384,391,199,648,920,785,6,291,220,197,151,419,172,386,813,13,688,137,631,293,178,355,398,731,369,546,501,97,292,798,745,726,269,440,619,931,418,407,755,381,618,555,46,104,967,843,722,326,281,406,205,968,465,570,973,945,616,118,879,815,670,509,875,651,438,275,26,695,825,354,446,842,311,521,796,972,879,141,204,528,472,550,520,876,734,944,39,21,962,512,107,272,945,98,95,414,326,128,33,398,133,57,151,814,381,938,993,883,661,376,960,742,582,6,795,85,588,773,215,171,647,991,755,546,580,404,716,472,101,607,592,128,410,446,832,363,466,228,162,321,794,560,193,863,167,722,595,985,70,668,158,446,339,975,473,543,141,480,400,549,963,110,813,327,705,726,368,883,409,820,975,581,623,303,720,435,292,400,350,124,298,561,784,267,442,746,199,617,794,237,716,726,321,553,916,212,798,93,408,380,255,364,630,911,260,807,65,375,51,132,812,644,870,966,936,969,953,749,268,902,546,63,997,151,639,702,470,842,376,866,343,97,14,616,46,325,222,478,391,199,937,835,484,711,240,183,828,529,669,98,971,304,748,580,548,758,430,267,336,772,530,846,974,161,719,896,516,462,755,517,654,210,224,590,433,728,236,642,126,680,984,641,908,481,175,871,628,819,541,499,27,188,951,150,606,931,615,182,964,819,894,635,199,943,70,671,816,968,161,255,145,4,689,488,205,706,184,241,538,568,81,930,732,708,45,162,973,320,71,281,746,795,10,691,438,711,247,381,555,566,872,598,17,555,512,647,430,157,349,18,68,458,895,216,540,461,483,918,682,447,825,139,145,255,98,672,766,877,476,514,612,832,250,429,448,372,908,543,83,515,919,415,11,270,324,921,398,261,869,826,942,900,372,864,614,435,728,196,805,707,561,74,735,356,500,386
5,433,165,121,235,784,107,827,784,740,255,944,448,267,926,362,676,614,694,269,282,268,460,691,177,494,357,247,939,905,619,382,261,591,802,169,317,544,274,890,657,535,807,105,257,366,598,295,75,842,976,632,669,591,38,525,839,437,313,442,108,458,24,941,555,599,935,261,962,616,860,265,725,180,595,582,618,145,870,862,511,169,850,565,119,761,747,232,748,459,343,656,106,603,392,367,178,81,360,398,906,730,704,637,660,45,602,609,337,419,355,206,784,831,989,601,710,939,670,851,665,870,791,864,382,328,361,583,308,463,647,340,269,245,62,395,300,333,277,952,145,711,723,585,872,979,746,172,574,63,791,638,841,179,261,431,344,829,99,909,135,440,202,568,172,826,190,321,219,350,172,209,771,231,255,428,429,233,651,143,471,528,843,179,762,686,131,544,90,857,460,505,384,566,824,522,967,663,195,790,419,654,512,144,87,506,67,268,166,838,573,20,152,114,392,589,876,893,854,583,939,185,814,121,615,780,471,830,354,43,13,817,107,984,262,762,519,671,762,670,733,894,851,699,492,39,346,116,93,186,665,860,777,542,166,405,994,242,167,303,924,544,563,912,237,25,831,855,506,287,761,783,71,849,282,911,190,320,177,903,125,755,632,64,588,129,665,495,697,802,790,19,538,64,437,9,847,664,949,391,584,883,515,856,735,53,173,992,257,216,964,891,296,225,307,173,666,996,141,667,176,687,104,20,337,140,778,969,508,226,143,180,937,24,253,793,670,11,153,477,56,788,242,752,740,96,322,916,780,919,867,119,879,115,948,84,468,902,893,828,53,398,239,257,436,151,614,974,719,358,779,595,792,686,160,449,376,177,645,545,16,859,452,529,780,925,254,995,53,226,544,778,585,706,97,380,999,706,318,608,760,203,810,200,626,827,30,75,702,949,219,598,85,157,496,879,68,743,147,211,841,33,646,807,842,117,166,437,303,706,345,497,404,451,321,550,825,836,634,924,213,824,327,562,900,316,825,89,576,844,518,699,610,917,986,695,148,658,219,177,43,380,870,470,29,982,114,320,929,503,641,418,681,312,321,332,273,891,20,199,919,531,407,103,835,86,199,190,656,179,532,62,20,895,469,667,972,707,181,391,647,626,332,393,597,852,782,963,578,385,623,86,733,182,635,800,313,341,901,130,470,212,212,103,619,393,489,881,44,566,275,368,326,418,331,73,874,171,522,223,764,975,804,1,614,726,490,497,930,764,147,979,39,629,105,614,634,54,235,341,175,695,343,464,819,278,240,234,995,735,470,190,343,896,165,102,135,362,269,939,657,284,477,14,300,526,302,115,960,811,501,326,651,918,592,182,296,504,611,72,740,438,140,603,979,290,466,448,423,595,883,654,202,6,669,236,545,316,94,610,579,397,24,536,626,855,880,858,270,42,245,948,945,960,728,484,761,385,496,555,665,957,843,781,533,241,306,767,681,601,242,793,998,879,552,600,481,34,629,866,883,241,203,767,582,925,376,730,324,466,434,547,557,872,721,612,732,418,458,322,9,132,912,925,328,176,225,440,740,118,424,513,62,574,643,342,881,470,137,45,861,780,716,80,627,41,324,75,305,822,191,30,785,893,201,418,867,519,496,873,943,678,957,606,89,110,899,863,234,27,667,486,781,513,970,13,800,111,672,700,347,996,605,321,86,351,229,750,851,889,638,10,952,711,768,665,951,276,258,388,247,767,294,561,408,185,785,239,203,684,490,290,198,60,968,79,631,611,592,518,815,108,766,43,365,62,116,337,232,711,529,637,121,166,28,652,218,715,727,178,681,320,978,875,452,669,422,501,422,433,537,185,177,792,780,852,420,750,499,830,837,737,101,281,955,909,169,138,946,311,147,811,944,937,663,906,233,394,345,846,970,211,912,361,953,580,871,762,646,214,730,74,831,638,620,769,464,427,361,671,796,162,985,336,634,13,365,752,669,932,172,570,852,869,703,538,151,130,443,669,138,74,395,89,367,221,337,987,827,822,767,322,663,903,268,673,416,202,215,278,708,172,261,242,187,671,71,353,75,333,828,823,71,4,739,215,995,388,810,873,668,507,542,632,967,160,77,42,411,241,310,134,412,143,937,450,156,64,91,436,304,676,150,192,897,671,97,930,135,331,631,686,829,478,584,770,494,264,718,881,954,688,569,878,312,32,221,77,715,83,833,516,582,222,311,718,49,201,245,678,887,923,62,986,373,755,49,25,743,639,429,388,241,161,791,10,580,702,606,547

Specifications

Columns
1000
Rows
5
Seed
707
Note
stress-tests wide-table handling and column limits

What is a .csv file?

CSV (Comma-Separated Values) is a plain-text tabular format where rows are lines and fields are separated by commas, with quoting rules for values that contain delimiters, quotes, or newlines. It has no formal type system and depends on encoding and dialect conventions. It is the most portable format for tabular data exchange.

How to use this file

Use an example CSV to test parsers against quoting and embedded-delimiter edge cases, header handling, encoding detection, and import pipelines into databases or spreadsheets.

Code examples

import pandas as pd

df = pd.read_csv("wide-1000-columns.csv")
print(df.head())
print(df.dtypes)

Generated by generation/data_edgecases.py. Free for any use, no attribution required — license.