diff --git a/get_data.py b/get_data.py
new file mode 100644
index 0000000..2691d81
--- /dev/null
+++ b/get_data.py
@@ -0,0 +1,50 @@
+import sys
+import os
+from req_data import get_data_file,download_data
+from read_data import read_data_genome,read_data_homology
+from process_data import list_dict_genomes
+
+def get_data_genome(arg,dir,a,d,ld,ldg):
+    if arg[0]=='-d':
+        if arg[4]=="-r":
+            c=0
+        else:
+            return a,d,ld,ldg
+    elif arg[0]=='-f':
+        get_data_file(arg[1],dir)
+    elif arg[0]=="-nd":
+        return ld,ldg,a,d
+
+    if arg[4]=="-r":
+        a,d=read_data_genome(dir,a,d)
+        assert(len(a)==len(d))
+
+        ld,ldg=list_dict_genomes(a,d)
+
+        assert(len(ld)==len(ldg))
+
+        for i in range(len(ld)):
+            assert(len(ld[i])==len(ldg[i]))
+
+    return ld,ldg,a,d
+
+def get_data_homology(arg,dir,a_h,d_h):
+    if arg[2]=="-l":
+        if not os.path.exists(dir):
+            os.mkdir(dir)
+        download_data(arg[3],dir)
+    elif arg[2]=="-f":
+        get_data_file(arg[3],dir)
+    elif arg[2]=="-d":
+        if arg[4]=="-r":
+            c=0
+        else:
+            return a_h,d_h
+    elif arg[2]=="-nd":
+        return a_h,d_h
+
+    if arg[4]=="-r":
+        a_h,d_h=read_data_homology(dir,a_h,d_h)
+        assert(len(a_h)==len(d_h))
+
+    return a_h,d_h
diff --git a/main.py b/main.py
new file mode 100644
index 0000000..34f26ec
--- /dev/null
+++ b/main.py
@@ -0,0 +1,27 @@
+import sys
+
+from get_data import get_data_homology,get_data_genome
+
+arg=sys.argv
+arg=arg[1:]
+
+if len(arg)!=5:
+    print("No. of arguments more or less. Please check")
+    sys.exit(1)
+
+a=[]
+d={}
+a_h=[]
+d_h={}
+ld=[]
+ldg=[]
+dir_g="data"
+
+ld,ldg,a,d=get_data_genome(arg,dir_g,a,d,ld,ldg)
+#print(a[0][0:10],"\n",a[2][0:10],"\n",d,"\n",ld[0][0:10],"\n",ld[2][0:10])
+dir_hom="data_homology"
+
+a_h,d_h=get_data_homology(arg,dir_hom,a_h,d_h)
+#print(a_h[0][0:10],"\n",d_h)
+
+x=input()
diff --git a/my.txt b/my.txt
new file mode 100644
index 0000000..6263a18
--- /dev/null
+++ b/my.txt
@@ -0,0 +1,3 @@
+ftp://ftp.ensembl.org/pub/release-96/gtf/lepisosteus_oculatus/Lepisosteus_oculatus.LepOcu1.96.gtf.gz
+ftp://ftp.ensembl.org/pub/release-96/gtf/mola_mola/Mola_mola.ASM169857v1.96.gtf.gz
+ftp://ftp.ensembl.org/pub/release-96/gtf/homo_sapiens/Homo_sapiens.GRCh38.96.gtf.gz
diff --git a/process_data.py b/process_data.py
new file mode 100644
index 0000000..ee8202d
--- /dev/null
+++ b/process_data.py
@@ -0,0 +1,15 @@
+import pandas
+import gc
+
+
+ls=[]
+ld=[]
+def list_dict_genomes(a,n):
+    for x in a:
+        ldg={}
+        uc=list(x["gene_id"])
+        for i in range(len(uc)):
+            ldg[uc[i]]=i
+        ls.append(uc)
+        ld.append(ldg)
+    return ls,ld
diff --git a/read_data.py b/read_data.py
new file mode 100644
index 0000000..cfc1ca7
--- /dev/null
+++ b/read_data.py
@@ -0,0 +1,50 @@
+import os
+import pandas as pd
+import gzip
+import sys
+
+def clear_data(x):
+    x=x.split()
+    try:
+        x=x[1]
+    except:
+        c=0
+        #print(x)
+    x=x[1:-1]
+    return x
+
+def read_data_genome(dir_name,a,dict_ind_genome):
+    lf=os.listdir(dir_name)
+    if len(lf)==0:
+        print("No files in the data directory!!!!!!")
+        sys.exit(1)
+    for x in lf:
+
+        data_gene=pd.read_csv(dir_name+"/"+x,compression='gzip',sep='\t',comment='#',header=None)
+        #print(data_gene.head)
+        data_gene=data_gene[data_gene[2]=="gene"]
+        data_gene=data_gene.sort_values(3)
+        tmp=data_gene[8].str.split(";",expand=True)
+        tmp=tmp.iloc[:,:5]
+        data_gene[["gene_id","gene_version","gene_name","gene_source","gene_biotype"]]=tmp
+        data_gene=data_gene.drop(8,axis=1)
+        #print(data_gene[0:10])
+        for y in ["gene_version","gene_name","gene_source","gene_biotype","gene_id"]:
+            data_gene[y]=data_gene[y].apply(clear_data)
+        #print(data_gene[0:10])
+        a.append(data_gene)
+        n=x.split(".")[0]
+        dict_ind_genome[n]=len(a)-1
+    return a,dict_ind_genome
+
+def read_data_homology(dir,a_h,d_h):
+    lf=os.listdir(dir)
+    if len(lf)==0:
+        print("No Files in the Directory!!!!!!!")
+        sys.exit(1)
+    for x in lf:
+        data=pd.read_csv(dir+"/"+x,compression='gzip',sep='\t')
+        a_h.append(data)
+        n=x.split(".")[0]
+        d_h[n]=len(a_h)-1
+    return a_h,d_h
diff --git a/req_data.py b/req_data.py
new file mode 100644
index 0000000..82016c5
--- /dev/null
+++ b/req_data.py
@@ -0,0 +1,26 @@
+import os
+import pandas
+import sys
+import urllib.request as urllib
+import pandas as pd
+
+
+lf=[]
+
+def download_data(x,dir_name):
+    fname=x.split("/")[-1]
+    path=os.path.join(dir_name,fname)
+    urllib.urlretrieve(x,path)
+
+def get_data_file(file,dir):
+    if not os.path.isfile(file):
+        print("The specified file does not exist!!!")
+        sys.exit(1)
+
+    with open(file,"r")as f:
+        lf=f.read().splitlines()
+
+    if not os.path.exists(dir):
+        os.mkdir(dir)
+    for x in lf:
+        download_data(x,dir)