溫馨提示×
您好，登錄后才能下訂單哦！
點擊 登錄注冊 即表示同意《億速云用戶服務條款》
您好，登錄后才能下訂單哦！
以下代碼是基于python3.5.0編寫的
import pandas
food_info = pandas.read_csv("food_info.csv")
# ---------------------特定列加減乘除-------------------------
print(food_info["Iron_(mg)"])
div_1000 = food_info["Iron_(mg)"] / 1000
add_100 = food_info["Iron_(mg)"] + 100
sub_100 = food_info["Iron_(mg)"] - 100
mult_2 = food_info["Iron_(mg)"]*2
# ---------------------某兩列相乘---------------------------
water_energy = food_info["Water_(g)"] * food_info["Energ_Kcal"]
# ----------------------把某一列除1000，再添加新列----------------------------
iron_grams = food_info["Iron_(mg)"] / 1000
food_info["Iron_(g)"] = iron_grams
#-------------------Score=2×(Protein_(g))−0.75×(Lipid_Tot_(g))--------------
weighted_protein = food_info["Protein_(g)"] * 2
weighted_fat = -0.75 * food_info["Lipid_Tot_(g)"]
initial_rating = weighted_protein + weighted_fat
#----------------------------數據歸一化-----------------------------------
max_calories = food_info["Energ_Kcal"].max() #找列最大值
normalized_calories = food_info["Energ_Kcal"] / max_calories
normalized_protein = food_info["Protein_(g)"] / food_info["Protein_(g)"].max()
normalized_fat = food_info["Lipid_Tot_(g)"] / food_info["Lipid_Tot_(g)"].max()
food_info["Normalized_Protein"] = normalized_protein
food_info["Normalized_Fat"] = normalized_fat
# -------------------------------排序----------------------------------
food_info.sort_values("Sodium_(mg)", inplace=True) #升序，inplace=True表示不從建DataFrame
print(food_info["Sodium_(mg)"])
food_info.sort_values("Sodium_(mg)", inplace=True, ascending=False) #降序，ascending=False表示降序
print(food_info["Sodium_(mg)"])
以上這篇pandas數值計算與排序方法就是小編分享給大家的全部內容了，希望能給大家一個參考，也希望大家多多支持億速云。
免責聲明：本站發布的內容（圖片、視頻和文字）以原創、轉載和分享為主，文章觀點不代表本網站立場，如果涉及侵權請聯系站長郵箱：is@yisu.com進行舉報，并提供相關證據，一經查實，將立刻刪除涉嫌侵權內容。
