import pandas as pd

Nowcoder = pd.read_csv("Nowcoder.csv", sep=",")

# 设置字符显示宽度
pd.set_option("display.width", 300)

# 设置显示最大行
pd.set_option("display.max_rows", None)
pd.set_option("display.max_columns", None)

# &一定要加括号分隔
# dicide = (Nowcoder["Graduate_year"] == 2020) & (Nowcoder["Language"] == "Java")
# print(Nowcoder[dicide])

# 外面用双引号，里面字符串用单引号
print(Nowcoder.query("Graduate_year == 2020 & Language == 'Java'"))