remove the numbers from txt file

Question

I have this rs.txt file containing:

rs41453844=CT rs36005134=AT rs41518851=AG rs2287980=GT rs28526632=AG rs41342447=AG rs41367249=AG (312, 0.207447)

rs41453844=CT rs36005134=AT rs41518851=AG rs2287980=GT rs28526632=AG rs41342447=AG rs41444944=AG (310, 0.206117)

rs41453844=CT rs36005134=AT rs41518851=AG rs2287980=GT rs28526632=AG rs41342447=AG (422, 0.280585)

rs41453844=CT rs36005134=AT rs41518851=AG rs2287980=GT rs28526632=AG rs41483646=AG (384, 0.255319)

rs41453844=CT rs36005134=AT rs41518851=AG rs2287980=GT rs28526632=AG rs41369844=AG rs235633=CT (301, 0.200133)

rs41453844=CT rs36005134=AT rs41518851=AG rs2287980=GT rs28526632=AG rs41369844=AG (396, 0.263298)

rs41453844=CT rs36005134=AT rs41518851=AG rs2287980=GT rs28526632=AG rs41440845=CT (384, 0.255319)

Can anyone help me with python codes to remove the numbers in the brackets? I just want the rs# to be saved in a new .txt file. Thanks.

Answer 1

How about

line = line.split("(")[0]

(everything preceding the first ( character)

so your program is something like

with open("rs.txt") as inf, open("new.txt", "w") as outf:
    for line in inf:
        line = line.split("(", 1)[0].rstrip() + "\n"
        outf.write(line)