# DS-1000 / 198

task_id: d4573ca4-f8f0-56b8-a52a-fcd25e687514
task_key: default--test--198
task_revision_id: 2

{"prompt":"Problem:\nI am trying to get count of letter chars in column using Pandas.\nBut not getting desired output.\nMy .txt file is:\nstr\nAa\nBb\n?? ?\nx;\n###\n\n\nMy Code is :\nimport pandas as pd\ndf=pd.read_csv('inn.txt',sep='\\t')\ndef count_special_char(string):\n    special_char = 0\n    for i in range(len(string)):\n        if(string[i].isalpha()):\n            continue\n        else:\n            special_char = special_char + 1\ndf[\"new\"]=df.apply(count_special_char, axis = 0)\nprint(df)\n\n\nAnd the output is:\n    str  new\n0    Aa  NaN\n1    Bb  NaN\n2  ?? ?  NaN\n3   ###  NaN\n4   x;      Nan\n\n\nDesired output is:\n      str  new\n0      Aa    2\n1      Bb    2\n2    ?? ?    0\n3     ###    0\n4  {}xxa;    3\n\n\n\n\nHow to go ahead on this ?\n\n\nA:\n<code>\nimport pandas as pd\n\n\ndf = pd.DataFrame({'str': ['Aa', 'Bb', '?? ?', '###', '{}xxa;']})\n</code>\ndf = ... # put solution in this variable\nBEGIN SOLUTION\n<code>\n"}

Source: https://ds1000-code-gen.github.io/

initial import

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