I want to know whether detected variants are hotspot mutations in TCGA or not.

Though cBioportal provides hotspot site for each gene, it doesn't provide download function.

Are there sites that provide hotspot mutation list or table?

Thank you
I don't know of a database. But you can ask whether your specific mutations are recurrent by querying cBio over the web, using Python. 

    import urllib2 
    
    # get information on breast cancer "brca" mutations in gene PIK3CA
    cBioUrl = "http://www.cbioportal.org/webservice.do?cmd=getMutationData&genetic_profile_id=brca_tcga_mutations&gene_list=PIK3CA"

    # read cBio to find PIK3CA mutation info in breast cancer, which you can parse to find recurrent mutations
    cBioFile = urllib2.urlopen(cBioUrl)
    recurrenceData = cBioFile.read()   # parse through the recurrenceData string (column "amino_acid_change")

The `recurrenceData` variable contains a list of samples with PIK3CA mutations, and the "amino_acid_change" column will tell you sites at which TCGA samples have mutations.

To scale this up, you would just make a loop where you replace the "PIK3CA" in cBioUrl with your gene of interest, and replace "brca" with your cancer type of interest. You can also query 19 common cancer types by looping through the following list in Python.

    pancan19_cancerIDs = ["ov", "ucec", "gbm", "brca", "luad",
                                            "prad", "skcm", "stad", "paad", "cesc",
                                            "blca", "hnsc", "kirp", "lgg", "laml",
                                            "kirc", "thca", "lusc", "coadread"]

