题解 | #用户常用语言有多少#
用户常用语言有多少
https://www.nowcoder.com/practice/b44891b56f5d434b8312dcee75675cc8
import sys
import pandas as pd
# df = pd.read_csv("Nowcoder.csv", dtype=object)
df = pd.read_csv("Nowcoder.csv")
lan = set(df["Language"])
print(len(lan))
print(list(lan))
