関連ワード:  python remove non-digit characters from string    python remove non alphanumeric characters from string    python remove non numeric characters from string    python remove non numeric chars from string    python strip non alphanumeric characters from string    python remove all non alphanumeric characters from string    python remove all non numeric characters from string    python remove non alphanumeric characters from end of string    python strip all non alphanumeric characters from string    python remove non ascii character from string  
結果 : python remove non-digit characters from string