Player jersey number

Write a Python program to output the jersey number of the player. Player's name is given in a file named 'player.txt' resides in the same folder as python program file. The output of the python program is only jersey number. For example, if the jersey number of the player is 99. Then output must be 99 only. Note: No spaces.

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Database schema

CREATE TABLE "public"."teams" (
    "team_id" varchar(10) NOT NULL,
    "name" varchar(80) NOT NULL,
    "city" varchar(80) NOT NULL,
    "playground" varchar(80) NOT NULL,
    "jersey_home_color" varchar(80),
    "jersey_away_color" varchar(80),
    PRIMARY KEY ("team_id")
);

CREATE TABLE "public"."managers" (
    "mgr_id" varchar(10) NOT NULL,
    "name" varchar(80) NOT NULL,
    "dob" date NOT NULL,
    "team_id" varchar(10),
    "since" date,
    PRIMARY KEY ("mgr_id")
);

CREATE TABLE "public"."matches" (
    "match_num" varchar(10) NOT NULL,
    "match_date" date NOT NULL,
    "host_team_id" varchar(10) NOT NULL,
    "guest_team_id" varchar(10) NOT NULL,
    "host_team_score" int4 NOT NULL,
    "guest_team_score" int4 NOT NULL,
    PRIMARY KEY ("match_num")
);

CREATE TABLE "public"."match_referees" (
    "match_num" varchar(10) NOT NULL,
    "referee" varchar(15),
    "assistant_referee_1" varchar(15),
    "assistant_referee_2" varchar(15),
    "fourth_referee" varchar(15),
    PRIMARY KEY ("match_num")
);

CREATE TABLE "public"."referees" (
    "referee_id" varchar(10) NOT NULL,
    "name" varchar(80) NOT NULL,
    "dob" date NOT NULL,
    PRIMARY KEY ("referee_id")
);

CREATE TABLE "public"."players" (
    "player_id" varchar(10) NOT NULL,
    "name" varchar(80) NOT NULL,
    "dob" date NOT NULL,
    "jersey_no" int4 NOT NULL,
    "team_id" varchar(10) NOT NULL,
    PRIMARY KEY ("player_id")
);