import NXOpen
import NXOpen.Annotations
import NXOpen.UF

def main():

    theSession  = NXOpen.Session.GetSession()
    workPart = theSession.Parts.Work

    # 文字列入力
    ret = input_string("Search string", "Search string")
    search_string = ret[0]
    ret = input_string("Replace string", "Replace string")
    replace_string = ret[0]

    # 寸法に対して処理
    for dimension in workPart.Dimensions:
        
        # 穴寸法か
        if not type(dimension) is NXOpen.Annotations.HoleDimension:
            continue
        
        appendText = dimension.GetAppendedText()

        # 後
        replaced = [ s.replace(search_string, replace_string) for s in appendText.GetAfterText() ]
        appendText.SetAfterText( replaced )
        # 前
        replaced = [ s.replace(search_string, replace_string) for s in appendText.GetBeforeText() ]
        appendText.SetBeforeText( replaced )
        # 上
        replaced = [ s.replace(search_string, replace_string) for s in appendText.GetAboveText() ]
        appendText.SetAboveText( replaced )
        # 下
        replaced = [ s.replace(search_string, replace_string) for s in appendText.GetBelowText() ]
        appendText.SetBelowText( replaced )

        dimension.SetAppendedText( appendText )

def input_string(title, default_string):
    # ret[0] : input string
    # ret[1] : 1 = Back, 2 = Cancel, 3 = OK (Accept default ), 5 = Data entered, 8 = Disallowed state
    theUI = NXOpen.UI.GetUI()
    theUI.LockAccess()
    ret = theUfSession.Ui.AskStringInput(title, default_string)
    theUI.UnlockAccess()
    return ret

if __name__ == '__main__':
    main()