prompt: We are currently solving the following issue within our repository. Here is the issue text:
  --- BEGIN ISSUE ---
  Problem with zeta zeroes download script
  The python script at https://github.com/LMFDB/lmfdb/blob/master/lmfdb/zeros/zeta/platt_zeros.py created by David Platt to parse downloaded zeta zeros files seems to no longer work correctly, possibly because of missing a file `index.db` that should be in the download directory at https://beta.lmfdb.org/data/riemann-zeta-zeros/.
  
  One can work around this problem by applying the following changes
  
  Change #1
  - line 70 in the code was " infile.seek(offset, 0)"
  - changed line 70 to " infile.seek(offset, 1)"
  
  Change #2
  - using sqlite3, create table "zero_index"
  - in table "zero_index" insert columns "t, N, filename, offset, block_number"
  - add a row to the zero_index table for each file you want to read (e.g. "1, 1, 'zeros_14.dat', 0, 1" for the first file)
  
  We should recover or recreate the missing index file and/or modify the script platt_zeros.py as required so that it works correctly without any changes.
  
  
  --- END ISSUE ---
  
  Below are some code segments, each from a relevant file. One or more of these files may contain bugs.
  --- BEGIN FILES ---
  Path: `lmfdb/zeros/zeta/zetazeros.py`
  Content:
  ```
  1 
  2 from mpmath import nstr, inf
  3 from sage.all import floor, log
  4 from lmfdb.logger import make_logger
  5 from flask import render_template, request, url_for, Blueprint, Response
  6 
  7 ZetaZeros = Blueprint("zeta zeros", __name__, template_folder="templates")
  8 logger = make_logger(ZetaZeros)
  9 
  10 from .platt_zeros import zeros_starting_at_N, zeros_starting_at_t
  11 
  12 credit_string = "David Platt"
  13 
  14 
  15 def learnmore_list():
  16     return [('Completeness of the data', url_for(".completeness")),
  17             ('Source of the data', url_for(".source")),
  18             ('Reliability of the data', url_for(".reliability"))]
  19 
  20 def friends_list():
  21     return [('L-function', url_for("l_functions.l_function_riemann_page"))]
  22 
  23 def downloads():
  24     return [('Bulk download', "https://beta.lmfdb.org/data/riemann-zeta-zeros/")]
  25 
  26 # Return the learnmore list with the matchstring entry removed
  27 def learnmore_list_remove(matchstring):
  28     return [t for t in learnmore_list() if t[0].find(matchstring) < 0]
  29 
  30 
  31 @ZetaZeros.route("/")
  32 def zetazeros():
  33     N = request.args.get("N", None, int)
  34     t = request.args.get("t", 0, float)
  35     limit = request.args.get("limit", 100, int)
  36     if limit > 1000:
  37         return list_zeros(N=N, t=t, limit=limit)
  38     else:
  39         title = r"Zeros of $\zeta(s)$"
  40         bread = [("L-functions", url_for("l_functions.index")), (r'Zeros of $\zeta(s)$', ' ')]
  41         return render_template('zeta.html', N=N, t=t, limit=limit, title=title, bread=bread, learnmore=learnmore_list(), friends=friends_list(), downloads=downloads())
  42 
  43 
  44 @ZetaZeros.route("/Completeness")
  45 def completeness():
  46     t = 'Completeness of Riemann zeta zeros data'
  47     bread = [("L-functions", url_for("l_functions.index")),(r"Zeros of $\zeta(s)$", url_for(".zetazeros")),('Completeness', ' ')]
  48     return render_template("single.html", kid='rcs.cande.zeros.zeta', credit=credit_string, title=t, bread=bread, learnmore=learnmore_list_remove('Completeness'))
  49 
  50 @ZetaZeros.route("/Source")
  51 def source():
  52     t = 'Source of Riemann zeta zeros data'
  53     bread = [("L-functions", url_for("l_functions.index")),(r"Zeros of $\zeta(s)$", url_for(".zetazeros")),('Source', ' ')]
  54     return render_template("single.html", kid='rcs.source.zeros.zeta', credit=credit_string, title=t, bread=bread, learnmore=learnmore_list_remove('Source'))
  55 
  56 @ZetaZeros.route("/Reliability")
  57 def reliability():
  58     t = 'Reliability of Riemann zeta zeros data'
  59     bread = [("L-functions", url_for("l_functions.index")),(r"Zeros of $\zeta(s)$", url_for(".zetazeros")),('Reliability', ' ')]
  60     return render_template("single.html", kid='rcs.rigor.zeros.zeta', credit=credit_string, title=t, bread=bread, learnmore=learnmore_list_remove('Reliability'))
  61 
  62 @ZetaZeros.route("/list")
  63 def list_zeros(N=None,
  64                t=None,
  65                limit=None,
  66                fmt=None,
  67                download=None):
  68     if N is None:
  69         N = request.args.get("N", None, int)
  70     if t is None:
  71         t = request.args.get("t", 0, float)
  72     if limit is None:
  73         limit = request.args.get("limit", 100, int)
  74     if fmt is None:
  75         fmt = request.args.get("format", "plain")
  76     if download is None:
  77         download = request.args.get("download", "no")
  78 
  79     if limit < 0:
  80         limit = 100
  81     if N is not None:  # None is < 0!! WHAT THE WHAT!
  82         if N < 0:
  83             N = 0
  84     if t < 0:
  85         t = 0
  86 
  87     if limit > 100000:
  88         # limit = 100000
  89         #
  90         bread = [("L-functions", url_for("l_functions.index")),(r"Zeros of $\zeta(s)$", url_for(".zetazeros"))]
  91         return render_template('single.html', title="Too many zeros", bread=bread, kid = "dq.zeros.zeta.toomany")
  92 
  93     if N is not None:
  94         zeros = zeros_starting_at_N(N, limit)
  95     else:
  96         zeros = zeros_starting_at_t(t, limit)
  97 
  98     if fmt == 'plain':
  99         response = Response(("%d %s\n" % (n, nstr(z,31+floor(log(z,10))+1,strip_zeros=False,min_fixed=-inf,max_fixed=+inf)) for (n, z) in zeros))
  100         response.headers['content-type'] = 'text/plain'
  101         if download == "yes":
  102             response.headers['content-disposition'] = 'attachment; filename=zetazeros'
  103     else:
  104         response = str(list(zeros))
  105 
  106     return response
  107
  ```
  --- END FILES ---
  
  Please first localize the bug based on the issue statement, and then generate a patch according to the `git diff` format fenced by three backticks.
  
  Here is an example:
  
  ```diff
  diff --git a/examples/server_async.py b/examples/server_async.py
  --- a/examples/server_async.py
  +++ b/examples/server_async.py
  @@ -313,4 +313,4 @@
   
   
   if __name__ == "__main__":
  -    asyncio.run(run_async_server("."), debug=True)
  +    asyncio.run(run_async_server(), debug=True)
  diff --git a/examples/server_sync.py b/examples/server_sync.py
  --- a/examples/server_sync.py
  +++ b/examples/server_sync.py
  @@ -313,5 +313,5 @@
   
   
   if __name__ == "__main__":
  -    server = run_sync_server(".")
  +    server = run_sync_server()
       server.shutdown()
  
  ```
  
golden_diff: diff --git a/lmfdb/zeros/zeta/zetazeros.py b/lmfdb/zeros/zeta/zetazeros.py
  --- a/lmfdb/zeros/zeta/zetazeros.py
  +++ b/lmfdb/zeros/zeta/zetazeros.py
  @@ -21,7 +21,7 @@
       return [('L-function', url_for("l_functions.l_function_riemann_page"))]
   
   def downloads():
  -    return [('Bulk download', "https://beta.lmfdb.org/data/riemann-zeta-zeros/")]
  +    return [('Bulk download', "https://beta.lmfdb.org/riemann-zeta-zeros/")]
   
   # Return the learnmore list with the matchstring entry removed
   def learnmore_list_remove(matchstring):
  
verification_info: {"golden_diff": "diff --git a/lmfdb/zeros/zeta/zetazeros.py b/lmfdb/zeros/zeta/zetazeros.py\n--- a/lmfdb/zeros/zeta/zetazeros.py\n+++ b/lmfdb/zeros/zeta/zetazeros.py\n@@ -21,7 +21,7 @@\n     return [('L-function', url_for(\"l_functions.l_function_riemann_page\"))]\n \n def downloads():\n-    return [('Bulk download', \"https://beta.lmfdb.org/data/riemann-zeta-zeros/\")]\n+    return [('Bulk download', \"https://beta.lmfdb.org/riemann-zeta-zeros/\")]\n \n # Return the learnmore list with the matchstring entry removed\n def learnmore_list_remove(matchstring):\n", "issue": "Problem with zeta zeroes download script\nThe python script at https://github.com/LMFDB/lmfdb/blob/master/lmfdb/zeros/zeta/platt_zeros.py created by David Platt to parse downloaded zeta zeros files seems to no longer work correctly, possibly because of missing a file `index.db` that should be in the download directory at https://beta.lmfdb.org/data/riemann-zeta-zeros/.\r\n\r\nOne can work around this problem by applying the following changes\r\n\r\nChange #1\r\n- line 70 in the code was \" infile.seek(offset, 0)\"\r\n- changed line 70 to \" infile.seek(offset, 1)\"\r\n\r\nChange #2\r\n- using sqlite3, create table \"zero_index\"\r\n- in table \"zero_index\" insert columns \"t, N, filename, offset, block_number\"\r\n- add a row to the zero_index table for each file you want to read (e.g. \"1, 1, 'zeros_14.dat', 0, 1\" for the first file)\r\n\r\nWe should recover or recreate the missing index file and/or modify the script platt_zeros.py as required so that it works correctly without any changes.\r\n\n", "before_files": [{"content": "\nfrom mpmath import nstr, inf\nfrom sage.all import floor, log\nfrom lmfdb.logger import make_logger\nfrom flask import render_template, request, url_for, Blueprint, Response\n\nZetaZeros = Blueprint(\"zeta zeros\", __name__, template_folder=\"templates\")\nlogger = make_logger(ZetaZeros)\n\nfrom .platt_zeros import zeros_starting_at_N, zeros_starting_at_t\n\ncredit_string = \"David Platt\"\n\n\ndef learnmore_list():\n    return [('Completeness of the data', url_for(\".completeness\")),\n            ('Source of the data', url_for(\".source\")),\n            ('Reliability of the data', url_for(\".reliability\"))]\n\ndef friends_list():\n    return [('L-function', url_for(\"l_functions.l_function_riemann_page\"))]\n\ndef downloads():\n    return [('Bulk download', \"https://beta.lmfdb.org/data/riemann-zeta-zeros/\")]\n\n# Return the learnmore list with the matchstring entry removed\ndef learnmore_list_remove(matchstring):\n    return [t for t in learnmore_list() if t[0].find(matchstring) < 0]\n\n\n@ZetaZeros.route(\"/\")\ndef zetazeros():\n    N = request.args.get(\"N\", None, int)\n    t = request.args.get(\"t\", 0, float)\n    limit = request.args.get(\"limit\", 100, int)\n    if limit > 1000:\n        return list_zeros(N=N, t=t, limit=limit)\n    else:\n        title = r\"Zeros of $\\zeta(s)$\"\n        bread = [(\"L-functions\", url_for(\"l_functions.index\")), (r'Zeros of $\\zeta(s)$', ' ')]\n        return render_template('zeta.html', N=N, t=t, limit=limit, title=title, bread=bread, learnmore=learnmore_list(), friends=friends_list(), downloads=downloads())\n\n\n@ZetaZeros.route(\"/Completeness\")\ndef completeness():\n    t = 'Completeness of Riemann zeta zeros data'\n    bread = [(\"L-functions\", url_for(\"l_functions.index\")),(r\"Zeros of $\\zeta(s)$\", url_for(\".zetazeros\")),('Completeness', ' ')]\n    return render_template(\"single.html\", kid='rcs.cande.zeros.zeta', credit=credit_string, title=t, bread=bread, learnmore=learnmore_list_remove('Completeness'))\n\n@ZetaZeros.route(\"/Source\")\ndef source():\n    t = 'Source of Riemann zeta zeros data'\n    bread = [(\"L-functions\", url_for(\"l_functions.index\")),(r\"Zeros of $\\zeta(s)$\", url_for(\".zetazeros\")),('Source', ' ')]\n    return render_template(\"single.html\", kid='rcs.source.zeros.zeta', credit=credit_string, title=t, bread=bread, learnmore=learnmore_list_remove('Source'))\n\n@ZetaZeros.route(\"/Reliability\")\ndef reliability():\n    t = 'Reliability of Riemann zeta zeros data'\n    bread = [(\"L-functions\", url_for(\"l_functions.index\")),(r\"Zeros of $\\zeta(s)$\", url_for(\".zetazeros\")),('Reliability', ' ')]\n    return render_template(\"single.html\", kid='rcs.rigor.zeros.zeta', credit=credit_string, title=t, bread=bread, learnmore=learnmore_list_remove('Reliability'))\n\n@ZetaZeros.route(\"/list\")\ndef list_zeros(N=None,\n               t=None,\n               limit=None,\n               fmt=None,\n               download=None):\n    if N is None:\n        N = request.args.get(\"N\", None, int)\n    if t is None:\n        t = request.args.get(\"t\", 0, float)\n    if limit is None:\n        limit = request.args.get(\"limit\", 100, int)\n    if fmt is None:\n        fmt = request.args.get(\"format\", \"plain\")\n    if download is None:\n        download = request.args.get(\"download\", \"no\")\n\n    if limit < 0:\n        limit = 100\n    if N is not None:  # None is < 0!! WHAT THE WHAT!\n        if N < 0:\n            N = 0\n    if t < 0:\n        t = 0\n\n    if limit > 100000:\n        # limit = 100000\n        #\n        bread = [(\"L-functions\", url_for(\"l_functions.index\")),(r\"Zeros of $\\zeta(s)$\", url_for(\".zetazeros\"))]\n        return render_template('single.html', title=\"Too many zeros\", bread=bread, kid = \"dq.zeros.zeta.toomany\")\n\n    if N is not None:\n        zeros = zeros_starting_at_N(N, limit)\n    else:\n        zeros = zeros_starting_at_t(t, limit)\n\n    if fmt == 'plain':\n        response = Response((\"%d %s\\n\" % (n, nstr(z,31+floor(log(z,10))+1,strip_zeros=False,min_fixed=-inf,max_fixed=+inf)) for (n, z) in zeros))\n        response.headers['content-type'] = 'text/plain'\n        if download == \"yes\":\n            response.headers['content-disposition'] = 'attachment; filename=zetazeros'\n    else:\n        response = str(list(zeros))\n\n    return response\n", "path": "lmfdb/zeros/zeta/zetazeros.py"}], "after_files": [{"content": "\nfrom mpmath import nstr, inf\nfrom sage.all import floor, log\nfrom lmfdb.logger import make_logger\nfrom flask import render_template, request, url_for, Blueprint, Response\n\nZetaZeros = Blueprint(\"zeta zeros\", __name__, template_folder=\"templates\")\nlogger = make_logger(ZetaZeros)\n\nfrom .platt_zeros import zeros_starting_at_N, zeros_starting_at_t\n\ncredit_string = \"David Platt\"\n\n\ndef learnmore_list():\n    return [('Completeness of the data', url_for(\".completeness\")),\n            ('Source of the data', url_for(\".source\")),\n            ('Reliability of the data', url_for(\".reliability\"))]\n\ndef friends_list():\n    return [('L-function', url_for(\"l_functions.l_function_riemann_page\"))]\n\ndef downloads():\n    return [('Bulk download', \"https://beta.lmfdb.org/riemann-zeta-zeros/\")]\n\n# Return the learnmore list with the matchstring entry removed\ndef learnmore_list_remove(matchstring):\n    return [t for t in learnmore_list() if t[0].find(matchstring) < 0]\n\n\n@ZetaZeros.route(\"/\")\ndef zetazeros():\n    N = request.args.get(\"N\", None, int)\n    t = request.args.get(\"t\", 0, float)\n    limit = request.args.get(\"limit\", 100, int)\n    if limit > 1000:\n        return list_zeros(N=N, t=t, limit=limit)\n    else:\n        title = r\"Zeros of $\\zeta(s)$\"\n        bread = [(\"L-functions\", url_for(\"l_functions.index\")), (r'Zeros of $\\zeta(s)$', ' ')]\n        return render_template('zeta.html', N=N, t=t, limit=limit, title=title, bread=bread, learnmore=learnmore_list(), friends=friends_list(), downloads=downloads())\n\n\n@ZetaZeros.route(\"/Completeness\")\ndef completeness():\n    t = 'Completeness of Riemann zeta zeros data'\n    bread = [(\"L-functions\", url_for(\"l_functions.index\")),(r\"Zeros of $\\zeta(s)$\", url_for(\".zetazeros\")),('Completeness', ' ')]\n    return render_template(\"single.html\", kid='rcs.cande.zeros.zeta', credit=credit_string, title=t, bread=bread, learnmore=learnmore_list_remove('Completeness'))\n\n@ZetaZeros.route(\"/Source\")\ndef source():\n    t = 'Source of Riemann zeta zeros data'\n    bread = [(\"L-functions\", url_for(\"l_functions.index\")),(r\"Zeros of $\\zeta(s)$\", url_for(\".zetazeros\")),('Source', ' ')]\n    return render_template(\"single.html\", kid='rcs.source.zeros.zeta', credit=credit_string, title=t, bread=bread, learnmore=learnmore_list_remove('Source'))\n\n@ZetaZeros.route(\"/Reliability\")\ndef reliability():\n    t = 'Reliability of Riemann zeta zeros data'\n    bread = [(\"L-functions\", url_for(\"l_functions.index\")),(r\"Zeros of $\\zeta(s)$\", url_for(\".zetazeros\")),('Reliability', ' ')]\n    return render_template(\"single.html\", kid='rcs.rigor.zeros.zeta', credit=credit_string, title=t, bread=bread, learnmore=learnmore_list_remove('Reliability'))\n\n@ZetaZeros.route(\"/list\")\ndef list_zeros(N=None,\n               t=None,\n               limit=None,\n               fmt=None,\n               download=None):\n    if N is None:\n        N = request.args.get(\"N\", None, int)\n    if t is None:\n        t = request.args.get(\"t\", 0, float)\n    if limit is None:\n        limit = request.args.get(\"limit\", 100, int)\n    if fmt is None:\n        fmt = request.args.get(\"format\", \"plain\")\n    if download is None:\n        download = request.args.get(\"download\", \"no\")\n\n    if limit < 0:\n        limit = 100\n    if N is not None:  # None is < 0!! WHAT THE WHAT!\n        if N < 0:\n            N = 0\n    if t < 0:\n        t = 0\n\n    if limit > 100000:\n        # limit = 100000\n        #\n        bread = [(\"L-functions\", url_for(\"l_functions.index\")),(r\"Zeros of $\\zeta(s)$\", url_for(\".zetazeros\"))]\n        return render_template('single.html', title=\"Too many zeros\", bread=bread, kid = \"dq.zeros.zeta.toomany\")\n\n    if N is not None:\n        zeros = zeros_starting_at_N(N, limit)\n    else:\n        zeros = zeros_starting_at_t(t, limit)\n\n    if fmt == 'plain':\n        response = Response((\"%d %s\\n\" % (n, nstr(z,31+floor(log(z,10))+1,strip_zeros=False,min_fixed=-inf,max_fixed=+inf)) for (n, z) in zeros))\n        response.headers['content-type'] = 'text/plain'\n        if download == \"yes\":\n            response.headers['content-disposition'] = 'attachment; filename=zetazeros'\n    else:\n        response = str(list(zeros))\n\n    return response\n", "path": "lmfdb/zeros/zeta/zetazeros.py"}]}