tcmb

tcmb is a Python API wrapper around the Central Bank of the Republic of Türkiye (TCMB) Web Service. It is an unofficial open-source Python package intended for personal use (Disclaimer).

tcmb, Türkiye Cumhuriyeti Merkez Bankası (TCMB) Web Servisi'ne Python aracılığıyla erişimi sağlayan resmi olmayan API uygulamasıdır. Kişisel kullanım ve araştırma maksadıyla hazırlanmıştır (Elektronik Veri Dağıtım Sistemi (EVDS) Kullanım Koşulları).

Quickstart

pip install tcmb

# or with uv
uv add tcmb

import tcmb

client = tcmb.Client(api_key="...")

data = client.read(series="TP.DK.USD.S.YTL")

Overview

Data Hierarchy

1. Categories:

Categories are at the top level of the TCMB data hierarchy.

client = tcmb.Client(api_key="...")

# show categories
client.categories

{'CATEGORY_ID': 1.0,
 'TOPIC_TITLE_ENG': 'MARKET STATISTICS',
 'TOPIC_TITLE_TR': 'PİYASA VERİLERİ'}

It is also possible to get the same information using the client.get_categories_metadata() method.

2. Data Groups:

Each category consists of a number of data groups.

client = tcmb.Client(api_key="...")

# show data groups
client.datagroups

[{'DATAGROUP_CODE': 'bie_pyrepo',
  'CATEGORY_ID': 1,
  'DATAGROUP_NAME': 'Açık Piyasa Repo ve Ters Repo İşlemleri',
  'DATAGROUP_NAME_ENG': 'Open Market Repo and Reverse Repo Transactions',
  ...}
 {'DATAGROUP_CODE': 'bie_mkbral',
  'CATEGORY_ID': 0,
  'DATAGROUP_NAME': 'Altın Borsası İşlemleri-İstanbul (TL-ABD Doları)(Arşiv)',
  'DATAGROUP_NAME_ENG': 'Istanbul Gold Exchange (TRY-USD)(Archive)',
  ...}]

It is also possible to filter the datagroups metadata using the client.get_datagroups_metadata() method.

3. Series

Datagroups consist of time series, each with a series key such as TP.YSSK.A1 or TP.DK.USD.S.YTL. Series can be read using the .read() method.

import tcmb

client = tcmb.Client(api_key="...")

# read one time series
data = client.read("TP.YSSK.A1")

# read multiple time series
data = client.read(["TP.YSSK.A1", "TP.YSSK.A2", "TP.YSSK.A3"])

A convenient way to read time series without initializing a Client instance is to use the package-level read() function.

import tcmb

# read one time series
data = tcmb.read("TP.YSSK.A1", api_key="...")

# read multiple time series
data = tcmb.read(["TP.YSSK.A1", "TP.YSSK.A2", "TP.YSSK.A3"], api_key="...")

Series metadata can be fetched with the .get_series_metadata() method.

# show metadata of each series within a data group
client.get_series_metadata(datagroup="bie_yssk")

[{'SERIE_CODE': 'TP.YSSK.A1',
  'DATAGROUP_CODE': 'bie_yssk',
  'SERIE_NAME': '1-2 Yıl(ABD doları)',
  'SERIE_NAME_ENG': '1-2 Years(USD)',
  ...},
  {'SERIE_CODE': 'TP.YSSK.A2',
  'DATAGROUP_CODE': 'bie_yssk',
  'SERIE_NAME': '3 Yıl(ABD doları)',
  'SERIE_NAME_ENG': '3 Years(USD)',
  ...}]

# show metadata of a specific time series
client.get_series_metadata(series="TP.YSSK.A1")

[{'SERIE_CODE': 'TP.YSSK.A1',
  'DATAGROUP_CODE': 'bie_yssk',
  'SERIE_NAME': '1-2 Yıl(ABD doları)',
  'SERIE_NAME_ENG': '1-2 Years(USD)',
  ...}]

Wildcard Characters

Wildcard characters are * and ?. The asterisk * matches zero or more characters, and the question mark ? matches exactly one character. Additionally, omitting a value has the same effect as using an asterisk. Note that wildcard support is not a feature of the TCMB web service itself; pattern matching is implemented inside tcmb package and depends on package data.

>>> data = tcmb.read("TP.DK.USD.*.YTL")
>>> print(data.columns)

Index(['TP_DK_USD_A_YTL', 'TP_DK_USD_S_YTL', 'TP_DK_USD_C_YTL',
       'TP_DK_USD_A_EF_YTL', 'TP_DK_USD_S_EF_YTL'],
      dtype='object')

Installation

pip install tcmb

# or with uv
uv add tcmb

Authentication

An API key is required to access the web service. Users can sign up on the login page. After signing in, generate an API key from the Profile page.

There are two ways to provide an API key to tcmb.

• Using environment variables:

$ export TCMB_API_KEY="..."

import os
os.environ["TCMB_API_KEY"] = "..."

• Passing api_key when initializing the Client class.

import tcmb

client = tcmb.Client(api_key="...")

# optional: override EVDS base URL
client = tcmb.Client(api_key="...", base_url="https://evds3.tcmb.gov.tr/igmevdsms-dis/)

Disclaimer

tcmb is an unofficial open-source package intended for personal use and research purposes. Please see TCMB's EVDS Disclaimer for the official terms of use of the EVDS Web Service.