関連ワード:  python remove all but numbers from string    python remove all non numbers from string    python remove everything but numbers from string    python remove all non digits from string    python remove all non integers from string    python remove all non numeric from string    python remove everything except numbers from string    python remove any non numeric from string    python remove all numbers from string    python remove all non numeric characters from string  
結果 : python remove all but numbers from string